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Science
Life Has Life Been Found on Mars?
New research into organic molecules and potential sample return missions are reigniting the debate over whether life exists on Mars.
Astrobiology
4 trends tracked about this subject — the full history, oldest to newest below.
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Science
Did Viking 1 find life on Mars 50 years ago? Here's why the debate continues
The 50th anniversary of Viking 1's landing on Mars has reignited a scientific debate over whether the spacecraft overlooked evidence of extraterrestrial life.
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Science
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In a 3.5-billion-year-old clay-rich rock from Gale Crater, NASA’s Curiosity rover identified 21 carbon-based molecules — including a nitrogen-bearing ring structure linked to the chemistry that can precede RNA and DNA
NASA's Curiosity rover finds 21 carbon-based molecules in 3.5-billion-year-old Mars rock
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Science
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Giant exoplanet may hold a magnetic grip on its host star
Researchers have found the strongest evidence to date of a magnetic field on a giant exoplanet that may be magnetically connected to its host star.