New images from the Mars Express spacecraft show ancient volcanic ash spreading across the Red Planet.
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'Interstellar glaciers' could give water to young star systems. Could they support alien life, too?
NASA's SPHEREx space telescope reveals widespread water ice in Cygnus X, showing how dust shields molecules in star-forming ...
An interstellar comet changed its chemistry after passing the Sun, revealing hidden layers and a surprising mix of carbon ...
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