Bio Sigantures Flashcards
1
Q
What are biosignatures
A
Life produces bio signatures gases that we can see with absorption spectroscopy for specific gasses
2
Q
Main bioginature gas on earth
A
Oxygen , use absorption spectra to see oxygen on earth over time
3
Q
What is red edge ?
A
Red edge can be used to map chlorophyll absorption and there fore plants
4
Q
False negatives in bio signatures
A
Sometimes gaseous biosingatires produced by subsurface signatures giving false positives
5
Q
Another problem with biosignatures
A
Difficult to see in clouds
