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

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

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

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

Astronomers have detected evidence of an exoplanet that would be the first to be discovered by the JWST. Using NASA’s James ...

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

An initial analysis suggests the object could be a young, cold planet with a temperature near 120 degrees Fahrenheit, NASA ...