New 3I/ATLAS images from NASA and the ESA suggest the interstellar comet is active as it approaches Earth in December.

NASA Chandra X-ray telescope data from galaxy cluster Abell 2146 showed a "shockwave that stretches for some 1.6 million ...

The galaxy's discovery challenges our understanding of how galaxies were formed in the early period after the Big Bang.

A spiral galaxy, shaped much like our Milky Way, has been found in an era when astronomers believed such well-formed galaxies ...

There's an optical illusion in this Hubble Space Telescope image. Credit: ESA / NASA / H. Nayyeri / L. Marchetti / J. Lowenthal When NASA's Hubble Space Telescope snapped a picture of an elliptical ...

In 2025, NASA faced unprecedented uncertainty as it grappled with sweeping layoffs, looming budget cuts, and leadership ...

A new discovery by NASA's flagship James Webb Space Telescope has pushed forward the confirmed end date of the so-called "Cosmic Dark Ages" by some 270 million years. In their study, an international ...

In this combination of images from NASA/ESA shows three future scenarios for Milky Way & Andromeda encounter. Top left: Galaxies bypass at 1 million light-year separation. Top right: At 500,000 ...

In this combination of images from NASA/ESA shows three future scenarios for Milky Way & Andromeda encounter. Top left: Galaxies bypass at 1 million light-year separation. Top right: At 500,000 ...

An illustration of one of the oldest stars ever found in our solar neighborhood. The aging star, cataloged as HD140283, lies 190.1 light-years from Earth. The oldest known naked eye star in our Milky ...

What you're looking at when the Milky Way is visible is the bright center of our galaxy with billions of stars. Because visibility from Earth depends on the latitude, the further south you go, the ...

CAPE CANAVERAL, Fla. (AP) — It turns out that looming collision between our Milky Way and Andromeda galaxies might not happen after all. Astronomers reported Monday that the probability of the two ...