Mercury is the month's highlight, reaching greatest elongation July 4. Also on show in the Southern Hemisphere: Mars, Saturn, ...

A mysterious new world has been spotted at the galaxy's edge, sparking excitement among astronomers, and its all thanks to a ...

Astronomers have discovered the strange dance that leads to the creation of rare "double hot Jupiters" in binary star systems ...

A new investigation into old Kepler data has revealed that a planetary system once thought to house zero planets actually has ...

The OSIRIS-REx spacecraft's name has been changed to OSIRIS-APEX for its new mission to asteroid Apophis. See its journey to ...

A rare Jupiter-sized planet AT2021uey b was found 3,200 light-years away using microlensing, a method based on Einstein's Theory of Relativity that observes light bending.

CALIFORNIA — The four-person civilian Fram2 mission returned home in a splash down off the coast of California on Friday after being the first humans to orbit Earth's polar regions. Riding in ...

Some objects were placed in space on purpose, symbolic gestures meant to inspire or amuse. Others were lost by accident, ...