Tag Archives: Astrobiology

Space bits suggest CO2 blanketed ancient Earth

Today, rising carbon dioxide in the atmosphere is a cause for concern, but 2.7 billion years ago, high levels of CO2 probably kept our planet warm enough for life even though the sun was about 20% fainter than it is today. … Continue reading

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Did life emerge from carbonate-rich lakes?

Where did life on Earth get its start? In a newly published study, researchers from the University of Washington argue that carbonate-rich lakes would have been the best place for life’s chemical building blocks to come together. Get the news brief … Continue reading

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Scientists fine-tune standards for habitable planets

Astronomers have identified thousands of stars that have planets, and that number could mushroom even faster when waves of next-generation telescopes come online. But where are the best places to look for life? A newly released study focuses on the most plentiful … Continue reading

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NASA decides to send a nuclear drone to Titan

NASA has chosen to commit up to $850 million to creating an interplanetary probe unlike any seen before: a rotor-equipped spacecraft that will fly through the smoggy atmosphere of Titan, Saturn’s biggest moon. The Dragonfly mission will be managed by Johns … Continue reading

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Cave-exploring rover tested for moon and Mars

BELLEVUE, Wash. — Underground lava tubes are great places to set up bases on the moon, or look for life on Mars — but they’ll be super-tricky to navigate. Which is why a NASA team is practicing with a cave … Continue reading

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Martian methane fades away but mystery remains

BELLEVUE, Wash. — NASA says the record-setting belch of Martian methane that its Curiosity rover detected last week has faded away, leaving some big questions hanging in the air: Where did the gas come from, and what were its origins? Much of … Continue reading

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Is there life on Mars? The answer may be squishy

BELLEVUE, Wash. — NASA’s Curiosity rover has detected fresh whiffs of Martian methane, once again sparking speculation about a potential biological source — but researchers at the space agency say it’s too early to raise the alert for life on Mars. … Continue reading

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