Learn how Hubble is measuring the expansion rate of the Universe in this new explainer from NASA's Goddard Space Flight ...

The X‑arithmetic technique offers a powerful new way to map the physics of other galactic structures across the universe and ...

The final milestone in construction was reached on November 25, as technicians carefully joined the giant telescope's inner ...

The final integration of the telescope's major observatory components took place on Nov. 25 inside NASA's Goddard Space ...

NASA's next big eye on the cosmos is now fully assembled. On Nov. 25, technicians joined the inner and outer portions of the ...

An astronaut on the International Space Station has captured a rare kind of lightning called a sprite while traveling 250 miles above the Texas–Mexico border. Referred to as “space lightning” and ...

NASA has confirmed 6,000 exoplanets, marking a major milestone in humanity’s quest to understand other worlds. From gas giants hugging their stars to planets covered in lava or clouds of gemstones, ...

NASA’s ESCAPADE mission launches two small spacecraft to Mars to study magnetic fields, solar wind and the risks and limits of lower-cost space science.

NASA's Goddard Space Flight Center in Maryland is facing controversy over potential building closures. Here's what's been ...

NASA astronaut Jonny Kim, who was born and raised in Los Angeles, returned to Earth Tuesday after 245 days in space. Kim and ...

NASA astronaut Jonny Kim flew home with two Roscosmos cosmonauts from the International Space Station packed tight in their ...

Russian Soyuz crews are now spending eight months aboard the space station instead of six to stretch supplies and lower costs ...