As protests against the construction of the Thirty Meter Telescope continue, the directors of Maunakea Observatories have taken the unprecedented move of closing all observatories atop the mountain.
Discoveries include a near-Earth asteroid with the shortest “year” and another found hours before it burned up in Earth’s atmosphere.
Astronomers have narrowed down the location of a third "fast radio burst" to a galaxy very like the Milky Way.
Some of the world's largest telescopes will be watching as the Moon blocks the Sun's disk and reveals its corona on July 2, 2019.
NASA has selected its next New Frontiers mission: Dragonfly, a rover-sized drone will begin ‘coptering around Titan in 2034.
On the eve of the 20th anniversaries for both the Chandra and XMM-Newton X-ray observatories, we celebrate with a look back at seven of their most incredible discoveries.
Four concepts are competing to be NASA’s next flagship mission. From exo-Earths to X-rays, what will the future hold?
Two teams of astronomers have announced the discovery of a Neptune-size planet in an unexpected orbit and three exocomets whizzing around nearby star Beta Pictoris.
A new study suggests that ‘Oumuamua’s strange trajectory back out to interstellar space can be explained if the object had the density of air.
Only a month into a new observing run, gravitational-wave observatories have announced five new signals — one of which could turn out to be a black hole swallowing a neutron star.