Earth Through Time as an Extrosolar Planet
Shawn Domagal-Goldman (NASA HQ)

The Earth is the only known inhabited planet. As such, it provides us with the only example of the spectral signatures of habitability and of life. However, the lessons learned from remote observations of Earth need not be limited to present-day conditions. Throughout Earth history, there have been multiple configurations of the atmosphere and biosphere, and surface. Collectively, these represent the most "alien" biospheres that we have data for, in this case from the rock record. In this presentation, we will discuss previous, detailed efforts to model modern Earth as an extrasolar planet. We will then discuss efforts to model the planet's state at various points in its history.