The host star, HIP 67522, is slightly larger and cooler than our Sun. But unlike our middle-aged star, this one is just 17 ...

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

At the aphelion, the distance from the Earth’s center to the Sun’s center is going to be 152,087,738 kilometers (94,502,939 ...

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

YOUNGSTOWN, Ohio (WKBN) – If you have thought that the Earth is close to the sun in the summertime and that is why it is ...

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

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

Stars passing close to the sun could cause planets to collide, including with Earth, or even be ejected as rogue planets, new simulations show. By Katherine Kornei If our species manages to hang ...

For the dwarf planet candidate, one trip around the sun takes over 24,000 years. Its orbit challenges a proposed path for a hypothetical Planet Nine.

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

Only one of the known Venus co-orbital asteroids follows a nearly circular orbit; the others move on more elongated paths ...

The James Webb Space Telescope has observed two large planets at different stages of infancy - one with an atmosphere brimming with dusty clouds and the other encircled by a disk of material - ...