European orbital rocket crashes after launch

The first orbital rocket launched from continental Europe crashed seconds after blast-off Sunday, in a closely watched test for the continent's bid to build a new space economy.

When glaciers roamed Mars

The surface of Mars is known for being an extremely cold, desiccated, and irradiated place. But as its many surface features attest, the red planet was once a warmer, wetter place with flowing water and glaciers. Today, most ...

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