"It was just a matter of time before we found them." ...

A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

Space weather isn’t referring to rain clouds that float through the galaxy. Instead, it’s caused by massive explosions of particles that shoot out from the Sun.

Why do all planets in our solar system orbit the Sun the same way? This documentary unravels the cosmic forces, from the solar system’s violent birth to the hidden laws of physics, that keep the ...

A young rogue planet about 620 light-years away from Earth has experienced a record-breaking "growth spurt," hoovering up ...

The official number of exoplanets—planets outside our solar system—tracked by NASA has reached 6,000. Confirmed planets are added to the count on a rolling basis by scientists from around the world, ...

Our solar system is a smashing success. A new study suggests that from its earliest period—even before the last of its ...

These celestial wonders can tell us a lot about the state of the atmosphere at home on Earth as well as on other planets. This article was originally published at The Conversation. The publication ...

Astronomers have captured something extraordinary: the first-ever direct photo of a baby planet growing inside a dusty ring ...

Astronomers have been fascinated after spotting an object earlier this year that came from interstellar space as is now hurtling through our inner solar system. Regardless, it’s an interesting visitor ...

The object, the latest “quasi-moon” detected by astronomers, could be with us for almost another 60 years. By Robin George Andrews The Earth stands alone in the solar system as a habitable world, as ...

NASA has confirmed 6,000 exoplanets, marking a major milestone in humanity’s quest to understand other worlds. From gas giants hugging their stars to planets covered in lava or clouds of gemstones, ...