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6 Reasons Astrobiologists Are Holding Out Hope for Life on MarsThere are some very good reasons to believe that primitive lifeforms may lurk on the Red Planet.
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Mars Rover Detects Primordial Signs of Life Under the Red Planet's SurfaceDon't get too excited just yet.
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Mars Was Once Covered in Wide, Raging RiversMars was very wet until suddenly it wasn't. And scientists still aren't sure why.
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NASA Discovered Evidence of Life on Mars 40 Years Ago, Then Set It On FireThe Viking landers that touched down on Martian soil in the 1970s may have set all the evidence for carbon-based life-forms on fire, a new study suggests.
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There May Be Life on Mars, But This NASA Report Doesn't Prove ItNASA did find two more scraps of evidence about the kind of life that might exist on Mars. Here's what the new research really shows.
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No, Those Aren’t Animal Tracks on Mars -
Curiosity Rover Spots Weird Tube-Like Structures on MarsNASA's Mars rover Curiosity has found intriguing structures on Mars that look like tiny, fossilized worm burrows — but mission team members aren't claiming that the finds are evidence of life.
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Why This Explosive, Mars-Like Volcanic Island Fascinates NASALife on Mars may have looked a lot like Tonga.
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Want to Protect Earth from Aliens? NASA Is HiringNASA is looking to hire a planetary protection officer, a person who will lead the agency's efforts to keep its spacecraft from contaminating worlds with life-forms that don't belong there.
