• Make fonts size smaller
  • Make fonts size larger
  • Make fonts size double larger

Loading Events
  • This event has passed.

Seminar Series: Dr. Stephanie Olson – Oxygenic Photosynthesis on an Anoxic Earth: Implications for Exoplanet Life Detection

January 28 @ 12:00 pm - 1:00 pm

Oxygenic Photosynthesis on an Anoxic Earth: Implications for Exoplanet Life Detection

The oxygen content of Earth’s atmosphere is a reflection of its photosynthetic biosphere—and, consequently, atmospheric oxygen is by far the most widely discussed ‘biosignature’ for remotely recognizing life on distant worlds. However, the relationship between atmospheric oxygen and biological oxygen production on Earth is complex. Biological oxygen production may predate low-level atmospheric oxygenation by more than 500 million years, and near modern levels of oxygen were delayed another 2 billion years! This talk will provide an overview of oxygen dynamics on early Earth and extend lessons from this history to the use of oxygen as a biosignature for exoplanet life detection.

 

Dr. Stephanie Olson is an Assistant Professor in the Department of Earth, Atmospheric, and Planetary Sciences at Purdue University. She is a biogeochemist and astrobiologist with broad interests spanning Earth history, planetary habitability, and exoplanet life detection.

 

Join Zoom Meeting
 
 
Meeting ID: 817 8126 0222
Passcode: 973214
 
 
 
 

Details

Date:
January 28
Time:
12:00 pm - 1:00 pm
Event Category: