A recent study has uncovered a dramatic interaction between a planet and its parent star that is reshaping our understanding ...

Sedna will make its closest approach to the Sun in 2076, giving us a rare opportunity to visit the planetoid before it drifts ...

How long does it take Pluto to orbit the sun? Learn more about how this planet makes one lap around our Solar System.

Long theorized but never observed, the first known “planet with a death wish” is described by Ilin and her colleagues in a ...

Comet 3I/ATLAS will get as close as 210 million kilometers (130 million miles) from the Sun, far beyond the orbit of Earth, ...

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

Hubble Space Telescope imagery Neptune has revealed that the planet's clouds are disappearing. Credit: NASA Goddard Space ...

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

Wide-orbit planets are fairly common according to the study, and there's a good chance we have one of our own.

What's happening in the skies over North Texas this month? July holds some spectacular sights in the night and morning sky.

Venus moves east as July progresses and stands 3° due north of Aldebaran on the 14th, after skirting the northern regions of ...

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