A mysterious and intense X-ray source near the black hole shines onto the surface layers of the accretion disk, causing iron atoms to radiate characteristic emission -- what astronomers call the iron K line -- at about 6,000 to 7,000 electron volts. The inner part of the disk is orbiting the black h...

SpaceX is about to launch its Crew Dragon, and is making history by bringing back human spaceflight to U.S.

This is a full-resolution version of the NASA Curiosity rover descent to Mars, taken by the MARDI descent imager. As of August 20, all but a dozen 1600x1200 frames have been uploaded from the rover, and those missing were interpolated using thumbnail data. The result was applied a heavy noise reduct...

‘I do not like spending my free time asking adults to make good choices’ — Watch 10-year-old Kai Shappley call out GOP lawmakers for ‘bullying’ her and other trans kids.

NASA is confirming divers from The History Channel have discovered a large pieces of debris on the ocean floor that came from the Space Shuttle Challenger disaster 36 years ago.

Watch as NASA astronauts Christina Koch and Jessica Meir prepare tools necessary for their spacewalk duties outside of the International Space Station on Friday, October 18, 2019.

NASA announced that its Curiosity rover had discovered organic material—carbon containing molecules that are essential building blocks for life—within Gale Crater, a 3.5 billion-year-old bedrock that scientists believed might have held a lake. The Curiosity rover also confirmed signs of methane—the

Astronomers are combing through fresh data from the James Webb Space Telescope in a never-ending quest to find ever-more-distant galaxies. However, the observatory is still studying a variety of objects, from insanely detailed images of Jupiter to the most distant known star.

On July 20, Blue Origin will fly its 16th New Shepard flight to space, and its first with astronauts on board. Broadcast starts at T-90 minutes to launch.

The Solar Dynamics Observatory (SDO) celebrates its 5th anniversary since it launched on February 11, 2010. This time-lapse video captures one frame every 8 hours starting when data became available in June 2010 and finishing February 8, 2015. The different colors represent the various wavelengths (...