"This is a big step in understanding the outer solar system," team leader Rosemary Pike from the Center for Astrophysics | ...

Astronomers have discovered a "fossil" world lying in the outskirts of the solar system, according to new research.

The Solar System is a fascinating place, with each planet orbiting the Sun at its own unique distance. But how far apart are ...

Astronomers have discovered the earliest seeds of rocky planets forming around a baby sun-like star, an unprecedented ...

We’ve never known why sunspots can last on our star’s surface for as long as they do, but we finally cracked the case.

Despite the powerful telescopes that modern astronomers have to work with, the distant reaches of the Solar System are still ...

Astronomers have spotted the birth of a new solar system for the very first time ever. Using the ALMA telescope, in which the ...

Answer 17: A meteoroid is a small rocky or metallic body in space. A meteor is the streak of light produced when a meteoroid ...

“We’ve always known that the first solid parts of planets, or ‘planetesimals’, must form further back in time at earlier ...

For the first time, astronomers have successfully observed the earliest stages of planet formation around a star outside our ...

It's not every day we get this close to the heart of our solar system and live to talk about it. But NASA just did something extraordinary. Its Parker Solar Probe has flown closer ...