Mars, NASA
"It's been such a puzzle that there was liquid water on Mars, because Mars is further from the sun, and also, the sun was ...
NASA's Perseverance rover has been busy gathering bits of Mars — rock cores the size of chalk sticks, clusters of broken fragments no bigger than pencil erasers, and even grains of dust fine enough to ...
The above image shows a 20-meter-long chunk of frozen carbon dioxide falling off a cliff. Rising temperatures during the ...
In the coming years, an unprecedented number of people will leave planet Earth—but it’s becoming increasingly clear that deep ...
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