Did prehistoric mars harbour life?
What about prehistoric Venus?Are you excited about learning about prehistory?What prehistoric planets and planets in general you want to visit?
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answers:
Ronald 7 say: Maybe
Depends on what you categorise as life
2.5 Billion years ago, before a massive Asteroid strike it probably had running water, lakes and seas
It was Geologically Active too
Rewind and even Algae is classed as life
Europa and Enceladus both have icy shells covering seas with thermal vents below
We have discovered creatures in the Ocean Depths and in Caves that don't need eyes to see on Earth
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Elyse Rose say: Algae never had opposing thumbs and could not learn to build rockets or hotels.
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John P say: If Mars ever harboured life, it would have been very primitive life-forms - no "little green men". Science is in the process of evaluating evidence from Mars - await announcements in the next 10 or 15 years. Be thankful that you live when you do - in the last 50 years a lot more has been discovered about space etc than was ever known in previous times.
And please note capital for "Mars".
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Jeffrey K say: Mars might have had life when it had water a couple billion years ago. But we don't know for sure. Venus probably never had life, but we can't rule it out.
I would like to go to Europa and go for a swim beneath the ice. There might be hot hydrothermal vents with fish swimming around them. And that could be there now.
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az_lender say: Planetary scientists think not. See Tosca, Knoll & McLennan (2008), in Science magazine vol. 320.
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CarolOklaNola say: Mars, yes, maybe FOUR different times.
Venus, probably not.
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Chris Ancor say: Yes, still does.
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NONAME say: not intellligent life...or i hope not
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quantumclaustrophobe say: It's possible both worlds may have had some early form of life; but I'm rather doubtful if either did. Both the climate of Mars and Venus turned inhospitable pretty early in their history - it's likely neither had *time* for life to develop.
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tham153 say: Mars--maybe
Venus--no way
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