Astronomers discovered a planet that orbits its star so closely that its surface is being scorched into magma and vaporizing ...

The planet orbits its host star in just 30.5 hours, losing a mass of material roughly equal to Mount Everest each time ...

The school-bus-sized observatory launched on April 24, 1990 and overcame early setbacks to become one of the most ...

Astronomers have stumbled upon yet another ghostly galaxy that appears to be devoid of dark matter, the elusive stuff that ...

How can you fairly compare one telescope to another? It's all in the (angular) resolution. The entire point of introducing ...

"The extent of the tail is gargantuan, stretching up to 9 million kilometers [5.6 million miles] long," said MIT astronomer ...

A new survey of distant galaxies undertaken by the James Webb Space Telescope (JWST) is revealing new secrets of the "cosmic ...

PSR J0311+1402 flashes every 41 seconds — quite slow for a pulsar. It could help bridge the gap between fast- and ...

Astronomers confirm a wandering black hole in our galaxy’s Sagittarius region using Hubble and Gaia microlensing data.

The trio is a rarity—and when all of its unusual traits are considered together, it is unique.

Objects in newly discovered classes also tend to be faint because, again, bright objects will have already been spotted. This ...

A surprisingly well-formed spiral galaxy has been spotted just a billion years after the Big Bang, challenging long-held ...