Watch the ESA trace 2 million stars' journey across the skies
Our descendants sure won't see the same constellations we do.
Lights out on a ghostly James Webb Space Telescope inspection
Newly discovered star remnants are the brightest ever seen
NGC 5907 X-1 is also the furthest pulsar ever observed.
Astronaut filmed elusive blue lightning aboard the ISS
And the video is quite mesmerizing.
Japan's space junk collection experiment ends in failure
The Kounotori 6 spacecraft burned up upon atmospheric reentry early Monday.
Magnetic fields could explain an 'erratic' neutron star
Scientists have a theory for Rapid Burster's unusual X-ray blasts.
Game developers take a stand against Trump's immigration ban
Several discounted their games and donated proceeds to the ACLU.
ESA wants to know why Galileo satellites' clocks stopped working
Because satellite navigation systems need precise atomic clocks to work properly.