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Earthrise 2015 LRO

Your Mind Can Space Out, But Your Body Belongs on Earth

Through the imagination, we can soar through distant galaxies. Sooner or later, physical reality hits home.

Thank Van Allen's Belts and Richter's Rockets

Invisible shields above the Earth protect us all from dangerous radiation. New space probes explore how they do it.

Rosetta's Philae: ESA Lands Probe on Comet

Another space first: the European Space Agency's Rosetta mission landed its Philae probe on a comet this morning, but will it stick?