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Featured Image Archive

sdo image mosaic

First Light Anniversary

04.21.2011
April 21, 2011 marks the one-year anniversary of the Solar Dynamics Observatory (SDO) "First Light" press conference. The mission has returned unprecedented images of solar flares, eruptions of prominences, and the early stages of coronal mass ejections.
Source: sdo.gsfc.nasa.gov/gallery/main.php
image of nile delta from orbit

Nile At Night

04.20.2011
The Nile River and its delta look like a brilliant, long-stemmed flower in this photograph of the southeastern Mediterranean Sea, as seen from the International Space Station.
Source: www.nasa.gov/multimedia/imagegallery/image_feature_1923.html
image of massive galaxy cluster collision based on data from the chandra x ray telescope and hubble space telescope

Galaxy Cluster Mash-Up

04.21.2011
This image shows a massive galaxy cluster called MACS J0717.5+3745. It consists of four smaller galaxy clusters colliding. Gas (in blue and red) is revealed in an image from NASA's Chandra X-ray Observatory. Galaxies appear in an optical image from NASA's Hubble Space Telescope.
Source: hubblesite.org/newscenter/archive/releases/galaxy/2009/17/image
Jupiter large moons

Jupiter Family Portrait

04.21.2011
This "family portrait," a composite of the Jovian system, includes the edge of Jupiter with its Great Red Spot, and Jupiter's four largest moons, known as the Galilean satellites. From top to bottom, the moons shown are Io, Europa, Ganymede and Callisto.
Source: http://www.nasa.gov/multimedia/imagegallery/image_feature_592.html

image of cas a supernova remnant

Multi-Wavelength Cosmos

04.11.2011
This image of the Cassiopeia A supernova remnant combines multi-wavelength data from four space observatories and one on the ground. Wavelengths include gamma rays, X-rays, visible and infrared light and radio waves.
Source: www.nasa.gov/mission_pages/GLAST/news/cosmic-rays-source.html
satellite image of dust off Portugal coast

Dusty Days

04.14.2011
A thick plume of dust hangs over the Atlantic Ocean off the coast of Portugal in this image from the MODIS instrument on NASA's Terra satellite on April 6, 2011.
Source: http://earthobservatory.nasa.gov/IOTD/view.php?id=49987
image of the sun surface

Spiraling Sun

04.15.2011
Cascades of spiraling magnetic loops, observed in extreme ultraviolet light by NASA's Solar Dynamics Observatory on April 3-5, 2011, danced and twisted above an active region on the sun.
Source: sdo.gsfc.nasa.gov/gallery/potw.php?v=item&id=47
image of mercury surface

Kuiper's Crater

04.11.2011
First seen in Mariner 10 images, the bright-rayed crater Kuiper (62 km in diameter) was imaged on April 10 by the MESSENGER spacecraft, now in orbit around Mercury.
Source: messenger.jhuapl.edu/gallery/sciencePhotos/image.php?gallery_id=2&image_id=468
image of galaxy cluster

Galactic Lensing

04.13.2011
In the galaxy cluster Abell 1689, gravity warps light from background galaxies into arcs.
Source: www.nasa.gov/mission_pages/hubble/multimedia/hubble20100819a.html


color image of mercury's limb

Live! In color

04.01.2011
The MESSENGER spacecraft imaged Mercury in color soon after achieving its historic orbit of the solar system's first planet.
Source: messenger.jhuapl.edu/gallery/sciencePhotos/image.php?page=1&gallery_id=2&image_id=446
satellite image of tien shan mountains

Range of Heaven

04.04.2011
The Tien Shan ('celestial mountains' in Chinese) is one of the longest continuous mountain ranges in the world, extending approximately 2,500 kilometers (1,550 miles) across Central Asia.
Source: earthobservatory.nasa.gov/IOTD/view.php?id=49857
image of solar eclipse by earth from space

Space Eclipse

04.06.2011
NASA's Solar Dynamics Observatory imaged the ragged shadow edge of Earth eclipsing the sun. Earth's shadow has a variegated edge due to its atmosphere, which blocks the sun light to different degrees depending on its density.
Source: www.flickr.com/photos/gsfc/5576582865/


image of looping prominence eruption on the sun

Well Rounded

03.23.2011
NASA's Solar Dynamics Observatory captured this nicely rounded prominence eruption on March 19, 2011, as the disturbance erupted into space with a distinct twisting motion.
Source: http://sdo.gsfc.nasa.gov/gallery/potw.php?v=item&id=46
photo of moon rising

Super Perigee Moon

03.24.2011
The full moon is seen as it rises near the Lincoln Memorial, Saturday, March 19, 2011, in Washington. The full moon tonight is called a super perigee moon since it is at its closest to Earth in 2011.
Source: www.nasa.gov/multimedia/imagegallery/image_feature_1900.html
montage of gamma ray images

Gamma-Ray Montage

03.29.2011
The radio jets of several active galaxies mapped by the Very Long Baseline Array are inset into the Fermi Gamma-ray Space Telescope's map of the gamma-ray sky.
Source: www.nasa.gov/mission_pages/GLAST/news/radio_telescope.html
image of martian valley

Chasma Boreale

03.24.2011
In this long, flat-floored valley that cuts deep into Mars' north polar icecap, the walls rise about 1,400 meters (4,600 feet). Where the edge of the ice cap has retreated, sheets of sand are emerging that accumulated during earlier ice-free climatic cycles.
Source: photojournal.jpl.nasa.gov/catalog/?IDNumber=PIA13659


image of stellar outflow

Stellar Outflow

03.14.2011
This infrared image shows an outflow of gas from a new star. The green tinge indicates the presence of organic molecules called polycyclic aromatic hydrocarbons.
Source: www.spitzer.caltech.edu/images/3224-sig10-14_A-Shocking-Outflow
satellite image of tsunami flooding in japan

Tsunami Aftermath

03.16.2011
In the wake of the magnitude 9.0 earthquake and resulting tsunami that struck northeastern Japan on March 13, 2011, ocean waters flooded croplands and settlements lining the Kitakami River.
Source: earthobservatory.nasa.gov/IOTD/view.php?id=49672
image of sun

Popping Off

03.15.2011
With numerous active regions populating the sun's surface, it is no surprise that March 6-8 NASA's Solar Dynamics Observatory saw flares and coronal mass ejections popping off in many directions.
Source: sdo.gsfc.nasa.gov/gallery/potw.php?v=item&id=45
artist concept of messenger spacecraft approaching mercury

Making Orbit

03.16.2011
After years of fly-bys, NASA's MESSENGER spacecraft is going into orbit around the first planet from the sun to continue its spectacularly successful voyage of discovery.
Source: www.nasa.gov/mission_pages/messenger/media/MESSENGERPoisedInsertion.html


satellite image of volcano

Let it Flow

03.04.2011
This false-color satellite image from the ASTER instrument aboard NASA's Terra satellite shows the dark remnants of avalanches of superheated ash, gas, and rock--called pyroclastic flows--on the slopes of Shiveluch Volcano on Russia's Kamchatka Peninsula.
Source: earthobservatory.nasa.gov/IOTD/view.php?id=49468
satellite image of phytoplankton bloom off new zealand coast

Turquoise Swirls

03.07.2011
In an image captured in February 2011 by the MODIS instrument on NASA's Aqua satellite, swirls of turquoise and green map out a large phytoplankton bloom along the shores of New Zealand's South Island.
Source: earthobservatory.nasa.gov/IOTD/view.php?id=49459
image of supernova remnant

Color Combo

03.08.2011
This composite view of the supernova remnant W49B combines infrared images from the ground (red, green) with X-ray data from NASA's Chandra X-Ray Observatory (blue).
Source: http://www.nasa.gov/mission_pages/astro-e2/news/fossil-fireballs.html
image of magnetic activity on the sun

Lots of Loops

03.03.2011
As an active region on the sun's surface rotated into view, Solar Dynamics Observatory captured this profile of the constantly changing magnetic field lines arcing high above it, February 23-27, 2011.
Source: sdo.gsfc.nasa.gov/gallery/potw.php?v=item&id=44
image of dunes on mars

Flaming Arabia Dunes

03.10.2011
Sand dunes shaped like blue-black flames lie next to a central hill within an unnamed 120-kilometer-wide crater in eastern Arabia on Mars.
Source: www.nasa.gov/mission_pages/odyssey/images/pia13658.html


image of saturn and ring shadows

Razor's Edge

02.22.2011
The shadows of Saturn's rings cast onto the planet appear as a thin band at the equator in this image captured by the Cassini orbiter in August 2009.
Source: photojournal.jpl.nasa.gov/catalog/PIA12708
satellite image of island volcano

Icy Waters

02.25.2011
NASA's EO-1 satellite captured this image of Ostrov Shikotan, a volcanic island at the southern end of the Kuril chain. Sea ice swirls shapes of ghostly blue-gray around the island.
Source: earthobservatory.nasa.gov/IOTD/view.php?id=49344
image of jellyfish nebula

Cosmic Jellyfish

02.25.2011
In a supernova remnant known as the Jellyfish Nebula, the Suzaku spacecraft detected X-rays from fully ionized silicon and sulfur (blue and yellow region). The ions are the imprint of extreme heating that occurred after the star's explosion.
Source: www.nasa.gov/mission_pages/astro-e2/news/fossil-fireballs.html
image of asteroid eros

Space Rock

02.25.2011
High-resolution surface images and measurements made by NEAR's Laser Rangefinder have been combined into the above visualization based on the derived 3D model of the tumbling space rock.
Source: apod.nasa.gov/apod/ap090607.html


image of solar flare

Flare Up

02.15.2011
A powerful flare burst on the sun, peaking on February 13. NASA's Solar Dynamics Observatory captured this image.
Source: sdoisgo.blogspot.com/2011/02/m66-solar-flare-largest-of-this-solar.html
satellite image of cloud streets

Winter Cloud Streets

02.18.2011
On January 24, 2011, lines of clouds stretch from northwest to southeast over the North Atlantic, while the relatively cloudless skies over land afford a peek at the snow that blanketed the Northeast just a few days earlier.
Source: earthobservatory.nasa.gov/IOTD/view.php?id=49254
image of spiral galaxy

Fluffy Spiral

02.17.2011
This image of galaxy NGC 2841 was captured by the Hubble Space Telescope's newest instrument, the Wide Field Camera 3.
Source: www.spacetelescope.org/news/heic1104
image of sun

Two Views

02.21.2011
Superimposing data from two spacecraft, SDO and SOHO, made it possible to observe the X2 flare of Feb. 15, 2011, as well as the faint edge of a "halo" coronal mass ejection that immediately raced outward toward Earth
Source: sdo.gsfc.nasa.gov/gallery/potw.php?v=item&id=42
photo of lunar lander on moon

The Jewel of the Sun

02.16.2011
This view of Antares, the Apollo 14 Lunar Module as it sat on the moon's Fra Mauro Highlands, reflects a jewel-like circular flare caused by the brilliant sun.
Source: www.nasa.gov/multimedia/imagegallery/image_feature_1853.html


image of distant galaxies

Simulated Seeing

02.08.2011
This visualization, peering deep into space at distant galaxies, simulates what the Webb Telescope may see when it begins operations in space and captures a "deep field" image of the universe.
Source: www.nasa.gov/topics/technology/features/webb-mcdr.html
ALTTEXT

Ice Waves

02.10.2011
Along the southeastern coast of Greenland, an intricate network of fjords funnels glacial ice to the Atlantic Ocean.
Source: www.flickr.com/photos/gsfc/5182692798/in/set-72157625402909346
image of the sun by sdo

Extreme Imaging

02.14.2011
A composite Solar Dynamics Observatory image from Feb. 11, 2011, exactly one year after the spacecraft's launch. The image combines three wavelengths of extreme ultraviolet light.
Source: www.nasa.gov/mission_pages/sdo/news/sdo-1year.html
image of young star jetting material

Gas Blaster

02.10.2011
Material rockets outward from a new star in this image based on from data collected by the Spitzer Space Telescope and the Two Micron All Sky Survey.
Source: www.spitzer.caltech.edu/images/3224-sig10-14_A-Shocking-Outflow


satellite image of  arkhangelsk russia

Archangel Flow

01.31.2011
Arkhangelsk ("Archangel"in English) is a city and the administrative capital of Archangelsk Oblast, Russia. It is situated on both banks of the Dvina River near where it flows into the White Sea.
Source: asterweb.jpl.nasa.gov/gallery-detail.asp?name=Arkhangelsk
satellite image of snow fall in capital region

Snowpocalypse Memories

02.02.2011
Nicknamed "snowpocalypse," an exceptionally severe winter storm dropped several feet of snow around the Washington, D.C., area and the surrounding region. NASA's Terra satellite captured this true-color image on February 7, 2010.
Source: earthobservatory.nasa.gov/IOTD/view.php?id=42568&src=eoa-iotd
image of spiral galaxy

Classic Spiral

02.02.2011
The bright galaxy NGC 3621 was captured here using the Wide Field Imager on the 2.2-meter telescope at the European Southern Observatory's La Silla Observatory in Chile.
Source: www.eso.org/public/news/eso1104/
image of the sun

Prominent Feature

02.07.2011
The STEREO (Ahead) spacecraft caught this spectacular eruptive prominence in extreme UV light as it blasted away from the sun April 12-13, 2010.
Source: www.nasa.gov/mission_pages/stereo/multimedia/Huge-Eruptive-Prominence.html
image of mercury's surface

Mercury in Color

02.04.2011
When imaged through 11 different color filters by the MESSENGER spacecraft, Mercury's surface blooms in color and vivid detail.
Source: http://photojournal.jpl.nasa.gov/catalog/PIA13823


image of venus surface

Crater Trio

01.24.2011
Three impact craters are displayed in this false-color perspective view of the surface of Venus, as imaged by the Magellan spacecraft.
Source: photojournal.jpl.nasa.gov/catalog/PIA00103
satellite image of frozen dragon lake

Frozen Dragon

01.25.2011
Nicknamed "Dragon Lake," this body of water is formed by the Bratskove Reservoir, built along the Angara River in southern Siberia.
Source: earthasart.gsfc.nasa.gov/dragon.html
image of star in gas and dust cloud

Star Plow

01.26.2011
The WISE Telescope took this infrared portrait of Zeta Ophiuchi, a massive, hot, bright blue star, plowing through a large cloud of interstellar dust and gas.
Source: photojournal.jpl.nasa.gov/catalog/PIA13455
image of sun by soho satellite

Blasting CME

01.27.2011
This SOHO spacecraft image from 2002 shows a widely spreading coronal mass ejection (CME) as it blasts more than a billion tons of matter out into space at millions of kilometers per hour.
Source: sohowww.nascom.nasa.gov/gallery/images/suncombo1.html
two different views of the planet uranus

Two Views

01.28.2011
These two pictures of Uranus -- one in true color (left) and the other in false color -- were compiled from images returned Jan. 17, 1986 by Voyager 2.
Source: www.nasa.gov/mission_pages/voyager/pia00032.html


image of solar surface

Holes in the Sun

01.17.2011
Two dark coronal "holes" -- areas where the solar surface is cooler and less dense than average -- blossomed on the sun as the Solar Dynamics Observatory watched.
Source: sdo.gsfc.nasa.gov/gallery/potw.php?v=item&id=37
image of edge of impact crater on mars

Impact Edge

01.17.2011
Many layers of bedrock are exposed at the edge of a meteorite impact crater near Mawrth Vallis on Mars, opening a window into the planet's geological history.
Source: photojournal.jpl.nasa.gov/catalog/PIA13726


visualization of dark matter in abell 1689 cluster

Dark Matter Map

01.05.2011
This visualization based on NASA Hubble Space Telescope observations maps the distribution of dark matter in the center of the giant galaxy cluster Abell 1689, containing about 1,000 galaxies and trillions of stars.
Source: hubblesite.org/newscenter/archive/releases/2010/37/image/a/
image of plankton bloom on ocean

Strange Brew

01.10.2011
Off the coast of Argentina, converging ocean currents stir up a colorful brew of floating nutrients and microscopic plant life.
Source: www.flickr.com/photos/gsfc/5319841331
image of sun surface

Two-Faced Galaxy

01.13.2011
These images by NASA's Hubble Space Telescope show off two dramatically different face-on views of the spiral Whirlpool Galaxy. The image at left highlights the galaxy's arms, star-forming regions, and star clusters; at right, its skeletal dust structures.
Source: hubblesite.org/newscenter/archive/releases/2011/03
image of sun surface

Tri-Color Sun

01.12.2011
An elongated, dark solar filament appears reddish-purple when imaged in three wavelengths of extreme ultraviolet light, and stretches one-third of the way around the sun.
Source: sdo.gsfc.nasa.gov/gallery/potw.php?v=item&id=36


image of northeast snow storm from orbit

Northeast Snowblower

12.28.2010
The GOES-13 satellite captured this image of the powerful low pressure system that brought snows from Georgia to Maine along the U.S. East Coast.
Source: www.nasa.gov/centers/goddard/news/features/2010/goes13-snow.html
satellite image of Bombetoka Bay

Bountiful Bombetoka

12.28.2010
The Terra satellite's ASTER instrument captured this simulated natural color image of Bombetoka Bay in northwestern Madagascar, a prolific coffee-growing region.
Source: asterweb.jpl.nasa.gov/gallery-detail.asp?name=Bombetoka
image of v828 monocerotis

Star Imitates Art

12.28.2010
Like some cosmic van Gogh painting, a shell of cast off gas expands around the outbursting star V838 Monocerotis, captured on February 8, 2004, by the Hubble Space Telescope's Advanced Camera for Surveys.
Source: hubblesite.org/newscenter/archive/releases/2004/10
image of flare on the sun

Loops & Flares

12.28.2010
Solar Dynamics Observatory's Atmospheric Imaging Assembly captured this portrait after a solar eruption and a flare. The dark regions show the site of material cast out by the eruption.
Source: sdo.gsfc.nasa.gov/gallery/main.php?v=item&id=7
map of lunar topography

Deep Blue

12.28.2010
The latest topographic map of the moon based on Lunar Orbiter Laser Altimeter (LOLA) data reveals the deep, cold craters of the southern polar region in sharp relief, with the deepest areas indicated in blue.
Source: www.nasa.gov/mission_pages/LRO/news/lola-topo-map.html


image of cassini division in saturn's rings

Division Details

12.21.2010
The Cassini orbiter snapped this striking portrait of the famous Cassini Division in Saturn's ring system on September 3, 2010.
Source: www.ciclops.org/view/6540/Detailing_the_Division
image of rhea

Two-faced Moon

12.21.2010
This false-color image highlights the dramatic difference in tone between the two hemispheres of Saturn's moon Rhea. The lighter (left) hemisphere faces in the direction of Rhea's orbital motion around Saturn.
Source: www.nasa.gov/mission_pages/cassini/multimedia/pia12808.html


image of MAGNETIC FILAMENT ON 
THE SUn

Plasma Snake

12.05.2010
A huge magnetic filament snakes around the sun's southeast limb. NASA's Solar Dynamics Observatory took the above picture during the early hours of Dec 6, 2010.
Source: www.nasa.gov/mission_pages/sunearth/news/News120610-filamentsnake.html
image of bahama islands from 
orbit

Bahama Blue

12.13.2010
Waters around the Bahama Islands appear to glow due to reflections from shallow platforms of carbonate rock on the seafloor.
Source: modis.gsfc.nasa.gov/gallery/individual.php?db_date=2010-11-20
image of the jellyfish nebula

Infrared Explosion

12.15.2010
This oddly colorful cloud of gas and dust is the supernova remnant IC 443, imaged by NASA's Wide-field Infrared Survey Explorer (WISE). It's also known as the Jellyfish Nebula.
Source: www.nasa.gov/mission_pages/WISE/multimedia/gallery/pia13449.html
multiple image mosaic of the 
sun

Half and Half

12.15.2010
The left half of this mosaic, based on a SOHO satellite image, is in extreme ultraviolet. In the right half, the ultraviolet is transformed by "wavelet processing" to accentuate detailed features.
Source: sohowww.nascom.nasa.gov/pickoftheweek/old/02dec2006
image of crater on mercury

Rambling Rays

12.15.2010
In a mosaic of images by the Narrow Angle Camera aboard the MESSENGER spacecraft, rays fringe Mercury's Hokusai Crater out to distances of more than 600 miles.
Source: http://messenger.jhuapl.edu/gallery/sciencePhotos/image.php?gallery_id=2&image_id=396


artist's concept illustrates a comet being torn to shreds by a white dwarf star

A Comet Bites the Dust

11.30.2010
This artist's concept illustrates a comet being torn to shreds around G29-3, a so-called dead star, or white dwarf.
Source: www.nasa.gov/multimedia/imagegallery/image_feature_499.html
satellite image of the mississippi river

Meandering Mississippi

12.02.2010
The small, blocky shapes of towns, fields, and pastures surround the graceful swirls and whorls of the Mississippi River.
Source: www.flickr.com/photos/gsfc/5182095595/
image of star forming region in constellation orion

Star Power

12.05.2010
A colony of hot young stars is stirring up the cosmic scene in this dramatic image from NASA's Spitzer Space Telescope.
Source: www.spitzer.caltech.edu/images/3022-sig10-004-Orion-s-Dreamy-Stars
image of coronal mass ejection exploding on sun surface

Blast from the Past

12.02.2010
For 15 years, the Solar and Heliospheric Observatory (SOHO) has kept a wary eye on the sun, including eruptions on the solar surface known as coronal mass ejections (CMEs). One of the first coronal mass ejection-associated waves observed by SOHO occurred on April 7, 1997.
Source: www.nasa.gov/mission_pages/soho/15-years.html
image of jets on Saturn moon enceladus

Jet Blue

12.03.2010
In a false-color image, jets on the surface of Saturn's moon Enceladus spew ice particles, water vapor, and trace organic compounds.
Source: http://photojournal.jpl.nasa.gov/catalog/PIA08386


satellite image of phytoplankton bloom

Van Gogh from Space

11.21.2010
In the style of Van Gogh's painting "Starry Night," massive congregations of greenish phytoplankton swirl in the dark water around Gotland, a Swedish island in the Baltic Sea.
Source: http://www.flickr.com/photos/gsfc/5182695972
image of volcanic ash plume from orbit

Fire Mountain

11.24.2010
NASA's EO-1 satellite captured a volcanic plume from Krakatoa on November 17, 2010.
Source: www.nasa.gov/topics/earth/features/eo1-10th.html
image of sun surface

Coming Your Way

11.24.2010
The Solar and Heliospheric Observatory (SOHO) captured this image of the sun releasing an explosion of plasma -- a coronal mass ejection -- directly from the solar surface toward the spacecraft.
Source: www.nasa.gov/topics/solarsystem/sunearthsystem/main/solar-explosions.html
data visualization of venus surface

Magellan's Venus

11.23.2010
Synthetic aperture radar from the Magellan space probe, draped over a digital globe, produced this stunning data visualization of the surface of Venus.
Source: www.nasa.gov/topics/solarsystem/features/pia00104.html


image of the sun by solar dynamics observatory

Surreal Sun

11.14.2010
After maneuvers to calibrate its instruments, the Solar Dynamics Observatory temporarily beamed back surreally distorted images of the sun reminiscent of abstract art.
Source: sdoisgo.blogspot.com/2010/10/maneuvers-and-images.html
satellite image of matusevich glacier

Fractured Glacier

11.17.2010
At the margin of East Antarctica's Matusevich Glacier, the sun casts deep shadows across fragments of a fracturing river of ice.
Source: http://earthobservatory.nasa.gov/IOTD/view.php?id=46840
image of solar surface flare

Flashing Flares

11.19.2010
At the margin of East Antarctica's Matusevich Glacier, the sun casts deep shadows across fragments of a fracturing river of ice.
Source: http://earthobservatory.nasa.gov/IOTD/view.php?id=46840
image of light-colored rock outcrops on mars

Mars Lite

11.16.2010
In the Aureum Chaos region of Mars, bright outcrops and scarps indicate the presence of clay minerals called phyllosilicates, a clue to massive releases of groundwater in the planet's distant past.
Source: http://photojournal.jpl.nasa.gov/catalog/PIA13610

image of comet Hartley 2 captured by epoxi mission spacecraft

Passing By

11.08.2010
Comet Hartley 2 can be seen in glorious detail in this image from the NASA EPOXI flyby mission.
Source: www.nasa.gov/mission_pages/epoxi/epoxi-1-20101104.html
image of the brunt ice shelf taken from an airplane

Over the Shelf:

11.08.2010
NASA's DC-8 flew over the Brunt Ice Shelf in Antarctica on Oct. 26, 2010, during the first flight of NASA's Operation IceBridge Antarctic 2010 campaign.
Source: www.nasa.gov/mission_pages/icebridge/multimedia/fall10/DSC_4273_Studinger.html
illustration of the newly discovered gamma-ray bubbles

Gamma-Ray Bubbles

11.08.2010
Using data from NASA's Fermi Gamma-ray Space Telescope, scientists have recently discovered a gigantic, mysterious structure in our galaxy. This feature looks like a pair of bubbles extending above and below our galaxy's center.
Source: www.nasa.gov/mission_pages/GLAST/news/new-structure.html
image of the dark shadow of the moon passing in front of the sun as seen by the 
Solar Dynamics Observatory

Here Comes the Moon Again

11.08.2010
In this image captured by the Solar Dynamics Observatory, the moon passes in front of, or transits, the sun on November 6 nearly one month after the last transit on October 7.
Source: sdoisgo.blogspot.com/2010/11/moon-gets-in-way-again.html
side by side comparison of visible light image and temperature map of Saturn moon 
mimas

Mimas, The Pac Man Moon

11.08.2010
The left portion of this image shows Mimas in visible light. The right portion shows a temperature map, which resembles 1980s video game icon "Pac Man."
Source: www.nasa.gov/centers/goddard/news/features/2010/pac-man-mimas.html

image of stars within omega centauri

Globs of Stars

11.02.2010
The Hubble Space Telescope's Wide Field Camera 3 captured this portrait of the central region of the giant globular star cluster Omega Centauri.
Source: hubblesite.org/newscenter/archive/releases/2010/28
global map of plant growth and marine phytoplankton

Earth in Bloom

11.02.2010
In this global visualization produced with data collected by NASA's SeaWiFS instrument, dark green on land--and red, yellow, and green on the ocean--show where life is most productive.
Source: oceancolor.gsfc.nasa.gov/SeaWiFS
image of Andromeda galaxy in ultraviolet light

Ultraviolet Andromeda

11.02.2010
This mosaic of the Andromeda Galaxy (M31) merges 330 individual images taken by the Ultraviolet/Optical Telescope aboard NASA's Swift spacecraft.
Source: www.nasa.gov/mission_pages/swift/bursts/uv_andromeda.html
image of the full disk of the sun from the stereo spacecraft

Popping Off

11.02.2010
Pieces of the Sun were flying off into space in different forms from October 25 to 26, 2010, as NASA's STEREO (ahead) spacecraft observed in extreme ultraviolet light.
Source: sohowww.nascom.nasa.gov/pickoftheweek
image of the cracked surface of europa

All Cracked Up

11.02.2010
The icy surface of Europa is shown strewn with cracks, ridges, and "chaotic terrain" where ice blocks have jostled on the disrupted surface.
Source: http://www.nasa.gov/topics/solarsystem/features/europa-ice.html

image of a dark and elongated filament hovering above the Sun's surface

Dark Filament

10.25.2010
This Solar Dynamics Observatory close-up of a filament and active region, taken in extreme UV light, shows a dark and elongated filament hovering above the sun's surface on May 18, 2010.
Source: sdo.gsfc.nasa.gov/gallery/potw.php?v=item&id=1
image of Ouachita mountains from orbit

Folded Mountains

10.25.2010
ASTER, one of five Earth-observing instruments launched aboard NASA's Terra satellite, captured this image of the Ouachita Mountains in southeastern Oklahoma. These 'fold mountains' formed about 300 million years ago.
Source: www.nasa.gov/multimedia/imagegallery/image_feature_1784.html
image of the spiral galaxy NGC 3982

Pinwheel of Star Birth

10.25.2010
This face-on image of the spiral galaxy NGC 3982 reveals a rich tapestry of star birth along with its winding arms, marked by pink regions of glowing hydrogen, newborn blue star clusters, and obscuring dust lanes.
Source: hubblesite.org/newscenter/archive/releases/2010/36/
map of magnetic field lines emanating from the Sun

Magnetic Field Lines Galore

10.25.2010
The illustration maps the magnetic field lines emanating from the sun and their interactions superimposed on an extreme ultraviolet image from the Solar Dynamics Observatory on October 20, 2010.
Source: sdo.gsfc.nasa.gov/gallery/potw.php?v=item&id=28
temperature map of the south polar region of the moon

Lunar Cold Traps

10.25.2010
The Lunar Reconnaissance Orbiter's Diviner instrument created this temperature map of the moon's south polar region. It reveals intensely cold impact craters that are potential cold traps for water ice and other icy compounds.
Source: www.nasa.gov/mission_pages/LRO/news/lro-lcross-impact.html
image of saturn and shadows cast by its rings

Shadowy Equinox

10.18.2010
The shadows of Saturn's rings cast onto the planet appear as a thin band at the equator in this image captured by the Cassini spacecraft as the planet approached its August 2009 equinox.
Source: photojournal.jpl.nasa.gov/catalog/PIA12708
image of Escondida mine from orbit

Mining From Space:

10.18.2010
NASA's Terra satellite captured this image of the Escondida open-pit mine in Chile's Atacama Desert. The image highlights the different rock types present on the surface and the land changes caused by mining.
Source: www.nasa.gov/multimedia/imagegallery/image_feature_681.html
image of NGC 346 is a star-forming region

Where Stars Are Born

10.18.2010
NGC 346 is a star-forming region about 200 light-years across, pictured above by the Hubble Space Telescope.
Source: hubblesite.org/newscenter/archive/releases/2005/04/image/a/
image of the moon passing in front of the sun

Space Eclipse

10.18.2010
On October 7, 2010, the Solar Dynamics Observatory observed its first lunar transit when the moon passed between the spacecraft and the sun.
Source: sdo.gsfc.nasa.gov/gallery/potw.php?v=item&id=27
image of victoria crater on mars

Seeing Double:

10.18.2010
This stereo view of Victoria Crater on Mars combines two of the three images taken by the HiRISE camera on NASA's Mars Reconnaissance Orbiter.
Source: www.nasa.gov/multimedia/imagegallery/image_feature_711.html
image of earth from space

Water World

10.12.2010
Viewed from space, the most striking feature of our planet is the water. In both liquid and frozen form, it covers 75 percent of Earth's surface.
Source: www.flickr.com/photos/gsfc/5063392410/#
satellite image of dust blowing off the west coast of Africa and over the Canary Islands

Saharan Dust

10.12.2010
Desert dust blows off the west coast of Africa and over the Canary Islands in this image from the MODIS instrument on NASA's Terra satellite.
Source: http://www.nasa.gov/topics/earth/features/modis-dust.html
map of the microwave background radiation using seven years of data from the wmap satellite

Big Bang Glow

10.12.2010
This image is the detailed, all-sky picture of the infant universe created from seven years of data from the Wilkinson Microwave Anisotropy Probe (WMAP).
Source: www.nasa.gov/topics/universe/features/wmap-complete.html
series of four images showing an eruptive prominence on the sun

Lift Off!

10.12.2010
This eruptive prominence lifted off the sun on September 15, 2010. The images, captured by the Solar Dynamics Observatory, show off the strands of superheated gas, or plasma, within the prominence in exquisite detail.
Source: sdo.gsfc.nasa.gov/gallery/potw.php?v=item&id=26
image of ice plumes on saturn moon enceladus

Moon Plumes

10.12.2010
Dramatic plumes on the saturnian satellite Enceladus spray water ice out from many locations along the famed "tiger stripes" near the moon's south pole.
Source: www.nasa.gov/mission_pages/cassini/whycassini/cassini20100708-b.html
image of colliding antennae galaxies

Colliding Star Cities

10.04.2010
Observations from three of NASA's Great Observatories -- Hubble, Chandra, and Spitzer -- were combined to make this portrait of the colliding Antennae Galaxies.
Source: hubblesite.org/newscenter/archive/releases/2010/25/image/a
Landsat 7 satellite image of Guinea-Bissau, West Africa

Colorful Coastline

10.04.2010
This Landsat 7 image of Guinea-Bissau, West Africa, shows the complex patterns of the country's silt-laden coastal waters.
Source: www.flickr.com/photos/gsfc/4404817866/in/set-72157623424324229
image of colliding antennae galaxies

Planet Eater

10.04.2010
In this artist's concept, a star begins to consume a "hot Jupiter" orbiting a bit too close for comfort.
Source: www.nasa.gov/topics/universe/features/early-exit.html
image of the sun

A Swirling Maelstrom

10.04.2010
Twisting strands of plasma dance at the sun's edges in this Solar Dynamics Observatory image captured in extreme ultraviolet light September 18-22, 2010.
Source: sdo.gsfc.nasa.gov/gallery/potw.php?v=item&id=25
image of martian surface gullies

Martian Gullies

10.04.2010
This enhanced-color view, taken by the Mars Reconnaissance Orbiter in 2006, shows gullies in the Terra Sirenum region.
Source: www.nasa.gov/multimedia/imagegallery/image_feature_692.html
image of saturn rings

Grandeur of the Rings

09.28.2010
This Cassini orbiter view of Saturn looks toward the unilluminated side of the rings from about 40 degrees above the ring plane. Combining images taken using red, green and blue filters created this natural color view.
Source: photojournal.jpl.nasa.gov/catalog/PIA09865
portion of global map of PM 2.5 pollution particles

Pollution Mapping

09.28.2010
Scientists used NASA satellite data to produce a global map of a type of airborne particle, called PM 2.5, that may contribute to millions of premature deaths each year.
Source: www.nasa.gov/topics/earth/features/health-sapping.html
image of lagoon nebula

Dusty Heart

09.28.2010
A spectacular Hubble Space Telescope image reveals the dusty glowing heart of the Lagoon Nebula.
Source: www.flickr.com/photos/gsfc/5014452663/in/set-72157623410904809
image of solar prominence

Arch To Nowhere

09.28.2010
The STEREO (Ahead) spacecraft watched as an eruptive prominence near the back of the Sun arched up but then headed back to the Sun's surface over a few hours.
Source: sohowww.nascom.nasa.gov/pickoftheweek
image of aurora at Saturn south pole

Saturn's Sizzle

09.28.2010
This false-color composite image shows the glow of auroras streaking out about 1,000 kilometers (600 miles) from the cloud tops of Saturn's south polar region.
Source: www.nasa.gov/mission_pages/cassini/multimedia/pia13402.html
photo of crescent moon from orbit

Crescent Moon

09.20.2010
A last quarter crescent moon shines above Earth's horizon in this portrait by the Expedition 24 crew on the International Space Station.
Source: www.nasa.gov/multimedia/imagegallery/image_feature_1762.html
map of ozone concentrations over antarctica september 12 2010

Antarctic Ozone

09.20.2010
NASA's Aura satellite acquired data on September 12 for this map of ozone concentrations over Antarctica. The "hole" in the ozone layer typically reaches its maximum area in late September or early October.
Source: www.nasa.gov/topics/earth/features/ozone0910.html
image of loop prominences on the surface of the sun

The Sun Gets Loopy

09.20.2010
The Solar Dynamics Observatory watched as an active region in the sun's southern hemisphere produced a series of looping arcs of plasma on September 11 to 13.
Source: www.nasa.gov/multimedia/videogallery/index.html?collection_id=13587&media_id=18407351
map of lunar surface craters

Counting Craters

09.20.2010
In this topographic map created with data from the LOLA instrument on the Lunar Reconnaissance Orbiter, yellow circles indicate some of the thousands of lunar craters counted in a recent study.
Source: www.nasa.gov/mission_pages/LRO/news/turbulent-youth.html
image of hydrogen gas cloud in carina nebula

Cosmic Ice Sculpture

09.20.2010
These one-light-year-tall pillars of cold hydrogen and dust, imaged by the Hubble Space Telescope, are located in the Carina Nebula.
Source: hubblesite.org/newscenter/archive/releases/2010/29/image/a
image of solar flare and prominence september 8

Solar Surprise

09.15.2010
Just as sunspot 1105 was turning away from Earth on September 8, the active region erupted, producing a solar flare and a fantastic prominence.
Source: www.flickr.com/photos/gsfc/4975115754
image of arctic sea ice cover

Arctic Ice

09.14.2010
Sea ice grows each winter and shrinks each summer, reaching its yearly minimum size each fall. NASA's Aqua satellite captured this snapshot on September 3.
Source: www.nasa.gov/topics/earth/features/ice-min-approach.html
image of moon's south polar region by lunar reconnaissance orbiter lola instrument

Biggest basin

09.13.2010
The Lunar Reconnaissance Orbiter's LOLA instrument captured this portrait of the moon's south polar region. It features the Aitken Basin, the largest impact structure on the moon.
Source: www.nasa.gov/mission_pages/LRO/multimedia/lroimages/lola-20100409-aitken.html
satellite image of smoke plume from fire east of boulder colorado

Boulder Blaze

09.08.2010
The MODIS instrument on NASA's Terra satellite imaged the Fourmile Canyon Fire west of Boulder, Colorado. The blaze broke out around 10 a.m. on September 6.
Source: earthobservatory.nasa.gov/IOTD/view.php?id=45675
satellite image of hurricane earl

Earl's Whirl

09.07.2010
In this image captured by NASA's Terra satellite on Thursday September 2, Hurricane Earl scuds along the North Carolina coast. Earl weakened to a tropical storm the next day.
Source: http://www.flickr.com/photos/gsfc/4954583979/#"
image of the sun surface in extreme ultraviolet

Extreme Trio

09.07.2010
An image captured by the Solar Dynamics Observatory in three bands of ultraviolet light shows bright active regions on the sun's surface.
Source: sdo.gsfc.nasa.gov/gallery/main.php?v=item&id=28
image of interstellar dust cloud

Into the night

09.07.2010
A spectacular image by the Hubble Space Telescope reveals new details in IRAS 05437+2502, a floating mountain of interstellar dust in the constellation Taurus. Exactly what illuminates the cloud remains uncertain.
Source: http://www.nasa.gov/multimedia/imagegallery/image_feature_1741.html
image of galaxy cluster with dark matter

Dark Mapping

08.24.2010
In an image based on Hubble Space Telescope observations, ghostly "dark matter" is indicated by the blue cloud within a galaxy cluster.
Source: http://hubblesite.org/newscenter/archive/releases/2010/26/image/a/
image of spiral galaxy

An Island Universe

08.11.2010
A long-exposure Hubble Space Telescope image shows a majestic face-on spiral galaxy located deep within the Coma Cluster of galaxies.
Source: http://www.nasa.gov/mission_pages/hubble/science/island-universe.html
satellite photo of calving glacier

Ice Calves From Greenland Glacier

08.11.2010
A chunk of ice some 97 square miles in size broke off Greenland's Petermann Glacier on August 5. The resulting iceberg is the Arctic's largest since 1962.
Source: http://www.nasa.gov/topics/earth/features/petermann-calve.html
image of sun captured by solar dynamics observatory august 1, 2010

Solar Storm Warning!

08.11.2010
On August 1, powerful disturbances on the sun's surface culminated in brilliant auroral displays above Earth several days later. The Solar Dynamics Observatory saw it happen.
Source: http://www.nasa.gov/topics/solarsystem/sunearthsystem/main/News080510-cme.html
image of Saturn moon rhea and shadows cast by the planet's rings

Planet or Painting?

08.11.2010
In a scene reminiscent of an abstract painting, Saturn's moon Rhea is gently lit in front of the wide shadow cast by the rings.
Source: http://photojournal.jpl.nasa.gov/catalog/PIA12696
photo of webb telescope mirrors being tested

Testing Webb Telescope's "Eye"

08.11.2010
The James Webb Space Telescope's mirrors are chilled to -415 degrees Fahrenheit to measure how much the they will change in the frigid space environment.
Source: http://www.nasa.gov/centers/marshall/multimedia/photos/2010/photos10-094.html
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