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

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

Neptune stands stationary against the background stars of Pisces the Fish at 11 A.M. EDT. The solar system's most distant ...

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

The Sun, our life-giving star, is slowly dying. In about 5 billion years, it will exhaust its fuel and transform into a red giant, altering the solar system forever. But long before that, the Sun’s ...

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

Planetariums were a hit with the public. Within decades, they had spread around the world – the first planetarium in the ...

I/ATLAS is only the third interstellar object ever detected. You can stream the object live today, or maybe see it from your ...

New research says that Earth could be ejected from our solar system if a passing star was to come close enough.

For only the third time in history, astronomers have detected a new interstellar visitor — an object from another star — blitzing into our solar system.

The Voyager probes we sent from Earth back in the 70s found an incredible 'wall of fire' at the edge of our solar system ...

Researchers from the Nanjing Institute of Geology and Paleontology of the Chinese Academy of Sciences and Columbia University ...