Sedna will reach its closest approach to the Sun in 2076, providing a remarkable space-faring opportunity that won’t come ...

Scientists have proposed two experimental spacecraft that could reach one of the farthest known objects in the solar system ...

A meteor shower, a planet sighting, and a full moon. Here's how to see all of space's eye-catching activity in July.

To get a glimpse of the “Swift Planet,” EarthSky suggests waiting for the sun to set before looking west for the planet ...

We see some of our hottest temps when Earth is furthest from the Sun (aphelion) and coolest at the closest to the Sun ...

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

Astronomers have confirmed the presence of a new interstellar object hurtling through our solar system, on a trajectory that ...

Our solar system is a pretty wild place, full of amazing stuff. From the giant Sun to the tiny rocks floating around, there’s ...

That threat is evident in the low-key offices of Space Command, where personnel know that one consequence of a satellite ...

Since Kepler's laws of motion dictate that celestial bodies orbit more slowly when farther from the sun, we are now moving at ...

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

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