The size of the Solar System and the Universe is truly beyond our comprehension. When we think of the vastness of space, we ...

What if there’s a planet hiding in our solar system, 10 times larger than Earth? While this theory has yet to be confirmed, ...

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

How many dwarf planets are there in our solar system? The recent discovery of 2017 OF201 makes the tally anywhere between ...

I/ATLAS, earlier known as A11pI3Z, is only the third interstellar visitor to be discovered passing through our corner of the ...

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

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

Stars often whip their planets with solar winds and radiation, pull them ever closer with gravity and sear them with heat.

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