Researchers observe the first known interstellar comet
Its path suggests it couldn't have been trapped by the Solar System.
Stephen Hawking makes his doctoral thesis available online
He's taking advantage of modern technology to spark an interest in space.
Astronomers just measured a whole lot more than gravitational waves
Researchers around the world are collecting troves of new data from this latest event.
Long-delayed Thirty Meter Telescope gets the go-ahead, for now
Protesters vow to keep fighting its construction.
Nine of Cassini’s most exciting discoveries about Saturn
From electrically-charged moons to hexagonal polar storms, this place has it all.
Astronomers use AI to reduce analysis time from months to seconds
A neural network was able to quickly extract information from images of gravitational lensing.
The TRAPPIST-1 star system may be too old for life
It's up to twice as old as the Solar System.
New computer models could direct scientists to epic cosmic events
This is what happens when a neutron star collides with a black hole.
Scientists may have found a Neptune-sized alien moon
It would be the first proof that exoplanets have companions.