NASA's Mars rover Curiosity experienced an electrical problem last week, and the robot will stay put for a few days while mission engineers try to figure out exactly what happened.
The presence of strange dark matter inside the sun may help astronomers solve a long-running puzzle about the sun. See what asymmetric dark-matter particles could mean here.
Astronomers have watched a pulsar some 25,000 light-years from Earth slip from view, swallowed by a companion star's warp in the fabric of space-time, proving Einstein right once again.
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