The search for Martian life
Chapter 1
The watery past of Mars
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Chapter 2
Robotic detectives on the red planet
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Chapter 3
Biosignatures and the clues of life
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Chapter 4
Earthly twins and extreme environments
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Chapter 5
Bringing Mars back to Earth
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YOUR GOAL
Master of The search for Martian life
Ch 3 · Biosignatures and the clues of life
Fun Fact
Fossilized rock patterns: Stromatolites on Earth are built by blue-green algae and represent some of the oldest physical evidence of life on our planet.
Glossary
biosignature (noun)
Any substance, structure, or pattern that provides scientific evidence of past or present life. NASA's Perseverance rover collected Martian rock samples containing these potential organic markers at Jezero Crater.
Any substance, structure, or pattern that provides scientific evidence of past or present life. NASA's Perseverance rover collected Martian rock samples containing these potential organic markers at Jezero Crater.