Astronomers have discovered that 3I/ATLAS is carrying methanol and other chemicals that were probably important in the origin ...

Nearly 4.5 million years ago, two large, hot stars brushed tantalizingly close to Earth's sun. They left behind a trace in ...

Astronomers are closing in on evidence that a massive, unseen planet may exist far beyond Neptune. This discovery could ...

After decades of searching, astronomers may have finally stumbled upon the first moon known to exist beyond our solar ...

Astronomers have their eyes on a mysterious object zipping through the Solar System, and if their hunch is right, it could be the oldest visitor humanity has ever observed. Comet 31/ATLAS, first ...

Retired astronaut and current Sen. Mark Kelly (D-Ariz.) celebrated NASA ’s “pretty exciting” announcement on Thursday after ...

A cluster of objects has astronomers puzzled. The post Scientists Discover Weird Structure in Outer Solar System appeared ...

Astronomers might have found evidence of a structure located farbeyond Neptune, potentially giving us clues about the solar ...

Observations with the instrument SPHERE at ESO's Very Large Telescope have produced an unprecedented gallery of "debris disks" in exoplanetary systems.

On August 25, 2012, NASA's Voyager 1 spacecraft measured drastic changes in radiation levels, more than 11 billion miles from the Sun. Anomalous cosmic rays, which are cosmic rays trapped in the outer ...

It was a threshold crossed in the deepest reaches of space: A spacecraft launched from Earth has now entered new and unexplored territory that may or may not be outside our solar system. A press ...