Astronomy › Section H · The Moon, Mercury, Venus, and Mars › Topic H.8
Water and life on Mars
Every living thing we know needs liquid water, so the search for life on Mars starts by following the water. Mars is dry and frozen today, but its rocks show that water once flowed and pooled there. Whether anything ever lived in it is one of the great open questions of science.
In this topic
- Follow the water
- Air too thin for rivers
- Worked example: could a puddle survive?
- Ice at the poles and underground
- Worked example: how much water is in the caps?
- Rivers, lakes and deltas
- Where did the water go?
- Is there liquid water today?
- Looking for life
- Perseverance and the samples
- Common mistakes to avoid
- Key takeaways
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