The monstrous 85-mile-wide comet C/2014 UN271 is the second most distant body originating from the Oort Cloud found to be ...

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

Scientists have unlocked one of the solar system's many secrets from an unexpected source: a planetarium show.

The icy giant is more than 10 times the size of any known comet, according to the National Radio Astronomy Observatory.

If our solar system seems stable, it's because our short lifespans make it seem that way. Earth revolves, night follows day, ...

In the outer reaches of our solar system, far beyond the orbit of Pluto, lies Sedna, one of the most mysterious objects ever ...

Passing stars could trigger instability across the solar system, resulting in Earth being hauled out of its orbit.

The orange dwarf Gliese 710 is expected to come within 0.1663 light-years or 10,520 astronomical units in about 1.29 million ...

On March 8, ALMA spotted a pair of jets blasting out of the comet's nucleus – its solid icy core. Spectrometry revealed that ...

Thanks to ALMA’s powerful precision, scientists have now confirmed that comet C/2014 UN271 holds the title of the largest ...

NASA observes largest Oort Cloud comet, C/2014 UN271, exploding with CO gas jets, thanks to ALMA’s deep-space capabilities.

A recent study indicates a small chance that Earth could be ejected from our solar system due to passing stars. Simulations ...