How a young Jupiter saved Earth from falling into the Sun

Not all of the solar system’s building blocks formed simultaneously. Some of the first solid bodies, or planetesimals, formed ...
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NASA Mars Evidence Rekindles Life Debate

NASA’s report of potential signs of ancient life on Mars has reignited a long-running scientific debate about how common life ...

Evidence of hot water that’s essential to life points to Mars’ habitable past

Researchers have uncovered what may be the oldest direct evidence of hot water activity on Mars, suggesting the red planet ...

Mars Discovery Means ‘Galaxy Could Be Teeming With Life,’ Scholar Says

NASA’s discovery of potential evidence of ancient life on Mars means “our galaxy could be teeming with life,” says a ...
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Volcanic explosions on Mars may have left massive ice deposits at the Red Planet's equator

Ancient explosive volcanic eruptions on Mars could help explain mysterious hints of buried ice from the Red Planet's equator, ...
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Scientists Investigate Evidence of “Burrowing” Under Surface of Mars

Scientists simulated the conditions of Mars in a lab to observe how blocks of carbon dioxide "dug" their way through the ...
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Can Mars’ ice confirm past life?

Researchers simulated Martian permafrost and ice cap conditions in a laboratory, exposing *Escherichia coli* samples in pure water ice and water-sediment mixtures to cosmic radiation equivalent to 50 ...

NASA discovered a bacteria that can ‘play dead’—and might have accidentally sent it to Mars

In 2013, NASA discovered a bacteria evading its most stringent disinfections. Scientists just figured out how it does it.