One of the oldest unsolved riddles in planetary science concerns the origin of the moon. Over a century ago, George Darwin ...

Pulsars are some of the most reliable metronomes in the universe, and scientists are now using their flickering radio beams ...

How do you keep a fusion plasma that's hotter than the sun from damaging vital components near it? This is just one question ...

NASA's Nancy Grace Roman Space Telescope team has released detailed plans for a major survey that will reveal our home galaxy ...

The most obvious is Elon Musk's SpaceX, which dominates the rocket-launch industry and already has a plan to upgrade its next-generation satellites to serve as a type of data center. SpaceX plans to ...