Two ways of measuring how fast the universe is expanding disagree, a puzzle known as the Hubble tension. Tiny magnetic fields ...

Planned launch of 500,000 satellites could spoil about one in three Hubble images, even when the telescope stays above Earth's weather.

Hubble captures a dazzling stellar nursery where newborn stars light up and carve their way through glowing clouds in a ...

What looks like a galactic dance is really a cosmic optical illusion—two galaxies, worlds apart, perfectly aligned by chance.

Galaxy merger Arp-Madore 417-391 is on display in this new image captured by the Hubble Space Telescope's Advanced Camera for ...

The Hubble Space Telescope has captured imagery of the most distant single star found yet. It took the light from the star 12 ...

NASA’s Hubble has examined Cloud-9, a strange object with no stars that offers clues about early galaxy formation and dark ...

Learn how expanding satellite megaconstellations in low Earth orbit could introduce widespread light pollution into space ...

The planet's radius from pole to center has been revised to 66,842 km, and at the equator to 71,488 km. That makes it about 12 km smaller along the poles, and about 4 km smaller at the equator, than ...

A vast, flat sheet of dark matter may solve the long-standing mystery of why our neighboring galaxy Andromeda is speeding ...

NASA continues to capture amazing pictures from space. From detailed views of Mars to breathtaking perspectives of the Moon’s ...

Astronomers have produced the most detailed map yet of dark matter, revealing the invisible framework that shaped the Universe long before stars and galaxies formed. Using powerful new observations ...