For nearly five decades, NASA’s Voyager 1 and 2 spacecraft have ventured farther than any other human-made object, pushing ...

The interstellar object 3I/ATLAS has gathered significant scientific attention, and soon it will reach its closest point to the sun.

There are a few ways you could define the edge of the Solar System – for instance ... which ultimately travels past all the planets to some three times the distance to Pluto before being impeded by ...

Water discoveries in space happen all the time. But this one’s actually a big deal, and not just because some scientists got ...

Interstellar invader Comet 3I/ATLAS is still full of surprises — an unexpected brightening has scientists baffled ...

A rare interstellar visitor, comet 3I/ATLAS, is currently traversing our solar system, offering scientists a unique chance to ...

This illustration depicts the most distant object yet found in our Solar System, nicknamed "Farfarout," in the lower right. Along the bottom, various Solar System objects are plotted according to ...

Have you ever wondered just how big space really is? It’s huge. In fact, it’s astronomical! The Colorado Scale Model Solar System depicts the Sun, the planets, and the distances between them all on ...

The gravitational influence of dark matter on stellar motions within galaxies, particularly the high velocities of stars in the Milky Way, is the primary evidence for its existence. This influence is ...

There may be another world lurking between the orbital lines of our solar system. Astronomers in Japan have published their theory of an “Earth-like planet,” dubbed Planet Nine, that’s hiding in plain ...

"It all works like intricate clock gears. Throw more gears into the mix and it all breaks." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. What ...