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Johns Hopkins University's Applied Physics Labratory plans to crash a spacecraft into a near-Earth asteroid. NASA hopes it works.
The Baltimore-based product was launched into space as part of an experiment.
Virts's new book of showcases images and stories from his NASA career and Columbia childhood.
Maryland Science Center draws 3,000 to eclipse viewing event.
At the Space Telescope Science Institute, Kenneth Sembach is leading the next mission into the cosmos.
We interview the astronaut who spent six months on the International Space Station.