Astronomers traced a mysterious 'scar' of ionized gas around the solar system to two stars that had a close flyby with our ...

The comet is the third object ever confirmed to have entered our cosmic neighborhood from elsewhere in the galaxy. Space ...

Learn how you can say farewell to comet 3I/ATLAS as it passes by Earth on Dec. 19, 2025, and what we have learned during its ...

3I/ATLAS has now made its closest approach to the sun and Earth and is now heading back out toward the outer solar system. On ...

At the far edge of the Solar System, where the Sun’s influence thins into the dark between the stars, a pair of aging ...

Our galaxy, the Milky Way, is home to multiple wonders. There is our biggest star, VY Canis Majoris, the column-like structures known as the Pillars of Creation, and, in the middle of it all, a ...

The Oort Cloud, an expanse of icy bodies in the far reaches of our solar system, is shown here in a scene from "Encounters in the Milky Way," a show at New York City's Hayden Planetarium that spawned ...

An interstellar object – a comet from a distant star system – is passing through the space between Jupiter and Mars, and according to a recent study, Comet 3I/Atlas may be 3 billion years older than ...

Rocky planets like our Earth may be far more common than previously thought, according to new research published in the ...

Scientists find that two hot stars passed near our solar system 4.4 million years ago, altering nearby interstellar clouds.

There’s a bit of a paradox about our galaxy: it’s both jam-packed with stars and cavernously empty. The Milky Way is crowded in the sense that it holds hundreds of billions of stars, as well as ...

The newborn planetary system appears to be emerging 1,300 light-years away around a baby star known as HOPS-315. Planet-forming materials were first identified using NASA's James Webb Space Telescope.