In 1949, famed mathematician and physicist John von Neumann delivered a series of addresses at the University of Illinois, ...

Modern astronomy is giving us unprecedented views of the asteroids, comets, and other small bodies that litter our cosmic ...

Astronomers are gathering evidence of a massive hidden planet lurking beyond Neptune. These endangered predators have finally ...

A look at the potential effects of a rogue planet entering our solar system, from shifting Earth’s orbit to triggering ...

As telescopes have become more powerful, it’s turned out our solar system is not the only game in town: There are millions of ...

A distant gas giant the size of 10 Jupiters is now the first planet outside Earth's solar system to be mapped in three ...

On Jupiter’s moon Io—the solar system’s most volcanically active world—you’ll find the mountain Ionian Mons. Its height is estimated at nearly 8 miles. All in all, scientists have discovered more than ...

Astronomers have revealed that the real center of our solar system isn't the sun. Gravity is playing a part in everything. The barycenter is the center.

A coronal mass ejection on another star has been witnessed in its entirety for the first time, revealing that when these ...

Material around Chiron, a small icy world in the far reaches of the solar system, may be taking shape into a ring system of its own. The rare event is unfolding in real time, giving astronomers a ...