I/ATLAS has unexpectedly become bluer than the Sun, hinting that it could be emitting light, not just reflecting it — a sign ...

Located only 56 million light-years away in Ursa Major, NGC 4102 gives astronomers a nearby target to study how these active ...

Contrary to claims that 3I/ATLAS is no longer from Earth, space experts claim that the Manhattan-sized comet can now be ...

The Hubble Space Telescope was originally expected to last about 15 years in orbit, before its optical surfaces became too ...

As the third confirmed interstellar object to pass through our solar system, 3I/ATLAS is prime for new discoveries. It was ...

An interstellar comet that originated outside our solar system just flew by the sun. Next, the object will fly by Earth in December.

Since its launch in 1990, NASA's Hubble Space Telescope has made more than 1 million observations — and now scientists want your help to go through them all. The telescope's operators have launched a ...

Historically, the Andromeda Galaxy (M31) was a subject of extensive debate, initially considered a "nebulous smear" and later central to the "island universe" hypothesis proposing its status as an ...

Introduction -- Hubble's universe -- Hubble's top science accomplishments -- The message of starlight -- Crucibles of creation -- Starry tapestry -- Blaze of glory -- Hubble's invisible universe -- ...