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

How Many Planets Are There in the Solar System? There are 8 planets in our solar system. The planets orbit the Sun in elliptical trajectories, and they are all different in size, composition, ...

Astronomers are reporting the detection of a large object entering our solar system, and it is causing quite the stir in the ...

Comet or asteroid heading for the Sun is only the third time an interstellar object has been spotted inside our group of ...

Zooming in on 78 disks in the Ophiuchus star-forming region, scientists saw hitherto undiscovered structures around young ...

An object that appears to be from beyond our Solar System has been spotted hurtling towards the Sun, which if confirmed would ...

Astronomers have announced the discovery of A11pl3Z, a massive new interstellar object entering our solar system.

Astronomers on Wednesday confirmed the discovery of an interstellar object racing through our Solar System -- only the third ...

CAPE CANAVERAL, Fla. — Astronomers are monitoring an object headed our way that may have wandered over from another star system. Scientists have discovered what might be only the third known ...

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

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

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