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Venus Was Never Habitable

Venus has bad news and bad news: it was never earthlike, and models to determine its habitability are unreliable.

Mars Life Hopes Reduced

Key assumptions about habitability on Mars have fallen, but astrobiologists try to keep hope alive.

Earthbound Martians Go Nuts

How 90,000 Earthlings sent greetings to imaginary friends on Mars, and other Martian nuttiness.
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