Discovered on July 1 by the NASA-funded ATLAS telescope in Chile, 3I/ATLAS is only the third confirmed visitor from another ...

The Hubble Space Telescope has turned its sharp eye toward a ghostly swirl of stars and gas known as the "Lost Galaxy," given ...

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

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

Astronomer using Hubble discovers "young stars that are spiraling into the center of a massive cluster of stars in the Small ...

I/ATLAS comet is the 3rd-ever object discovered that originated from outside our solar system. It's not a threat, approaches ...

I/ATLAS attracted attention when it was confirmed to be only the third body originating from another star system.

The 14th day of the 18th annual Space Telescope Advent Calendar features undulating dust lanes at the edges of a distant ...

With construction complete, the telescope will now move into final testing. Following testing, Roman will be packaged and ...

Interstellar object 3I/ATLAS continues to display a Sun-facing anti-tail, confirmed by Hubble, Gemini and XMM-Newton ...

Scientists are testing a novel way to measure cosmic expansion using time delays in gravitationally lensed quasars. Their ...