Planetary Astronomy Late-morning Seminar for 2017-11-27

Series: Planetary Astronomy Late-morning Seminar
Date: Monday 27-Nov-2017
Time: 11:15-12:15
Location: Atlantic 1250
Speaker: Giada Arney (GSFC)
Title: Strategies for Identifying Habitable Exoplanets

In the future, powerful observatories may be able to search for signs of habitability and life in the atmospheres of exoplanets. But exoplanet atmospheres may not always be straightforward to characterize, and signs of habitability and life may not always be obvious to interpret. This talk will review strategies for detecting signs of habitability and life in the atmospheres of exoplanets with potential future observatories. To broaden our understanding of the spectral appearance of habitable and inhabited planetary states distinct from modern Earth, we can study earlier phases of Earth history, which can be considered “alien” worlds we have access to geochemical data for. Modeling potential biosignatures of earlier phases of Earth history can provide insight into how biospheres dominated by different metabolisms – and environments dominated by different conditions – may be detected. I will discuss the spectral appearance of these “alien” phases of Earth history in the context of possible future observatories.

For further information contact PALS coordinator Dr. Matthew Knight at knight@astro.umd.edu or (301)-405-2629.

SPECIAL ACCOMMODATIONS:

Special accommodations for individuals with disabilities can be made by calling (301) 405-3001. It would be appreciated if we are notified at least one week in advance.

DIRECTIONS AND PARKING

Directions and information about parking can be found here.

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