NASA engineers have successfully completed testing on one half of the Nancy Grace Roman Space Telescope — a key step in making sure this future observatory will perform as expected once it reaches ...

Exoplanets—planets that orbit stars beyond our solar system—have transformed our understanding of the universe. Since the ...

Astronomers sing the James Webb Space Telescope have made an unequivocal detection of frozen water in another star system for the first time.

A glass bead retrieved by China's Chang'e-5 lunar mission is offering a glimpse into the moon's hidden interior and violent past. Witness live views of Earth from the International Space Station as it ...

NASA's Europa Clipper, en route to Jupiter’s moon Europa, captured infrared images of Mars during a gravity-assist flyby to ...

Prepare to be mesmerized by breathtaking 4K orbital views that offer an unprecedented window into the beauty and wonder of ...