Just the third-ever confirmed interstellar object has been detected in our solar system. Here's what we know. (Spoiler: It's ...

A fascinating glimpse into how a solar system like our own is born has been revealed with the detection of planet-forming ...

When most people think of our Solar System, they think of the 8 planets officially recognized by the International Astronomical Union (IAU). But what if I told you there are at least 40 planets, and ...

Astronomers have spotted centimeter-sized “pebbles” swirling around two infant stars 450 light-years away, revealing the raw ...

Imagine waking up one morning to the news: a black hole is drifting close to our solar system. It sounds like the plot of a .

Close stellar encounters could change the structure of our planetary system, potentially dooming Earth or other worlds to ...

A small, inconspicuous meteorite may be about to change our understanding of how and when our solar system formed. Tiny shavings from the meteorite Northwest Africa 12264 are challenging the long-held ...

A meteorite, Northwest Africa 12264, is questioning the established timeline of our solar system's formation, suggesting ...

Rocky bodies called protoplanets were thought to have formed slightly earlier in the inner solar system than those beyond the ...

WASHINGTON (Reuters) -Scientists are tracking a large gas planet experiencing quite a quandary as it orbits extremely close ...

Stars passing close to the sun could cause planets to collide, including with Earth, or even be ejected as rogue planets, new ...

Scientists have detected planet-forming pebbles around two young stars, providing insight into the birth of solar systems ...