Telescopes
Theoretical astrophysicists predict that a glowing halo just outside the event horizon should surround all black holes.
It’s one of NASA’s longest-living and most valuable telescopes, sending back amazing space images to Earth for decades.
Scientists may soon be able to observe a dramatic, long-predicted consequence of Einstein’s theory of general relativity.
Puzzling planets with the apparent density of cotton candy probably have rings, according to a new study.
We honor the spacecraft’s 16-year journey with five beautiful images from the telescope.
That’s when the two stars in the binary system V Sagittae are set to merge in a spectacularly luminous fashion.
The SETI Institute leads the hunt for extraterrestrials, which has entered a new phase with myriad planets to focus on.
Astrophysicists devised a new theory that may explain the formation of black holes with masses exceeding 50 times that of our own sun.
The dragon's large belly holds clues about how stars form -- and how the process stops.
An assortment of twinkling images of space, stars and spacecrafts.
Researchers calculate all the photons ever emitted by the observable universe and find an astronomical number.
As Hurricane Lane races toward Hawaii, some of the world’s most powerful telescopes prepare for wild weather.