A ninth planet the size of Neptune may be hidden in the far reaches of the solar system, but the evidence has left some experts skeptical.

And in the past decade, more than 20 spacecraft have ventured into the deepest reaches of our solar system. These probes ... sending back pictures that humble or awe, even as they advance ...

Stunning new pictures of the futuristic ‘Sea Zero' cruise ship have been unveiled - showcasing a towering 164ft sail system ...

NASA’s Lucy spacecraft captures asteroid Donaldjohanson, marking a new step in its mission to explore the solar system’s ...

"Most people just dismiss partial eclipses. But I wanted to go to this partial eclipse to try to get the corona — and I did ...

Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, ...

Learn about the solar system from a pair of real space museum curators in sci-fi game Elite Dangerous, as Abbie MacKinnon and Laura Joy Pieters of the London Science Museum give a guided tour of our ...

They reveal a whole new level of detail in these planet-forming systems. Breakthroughs, discoveries, and DIY tips sent every ...

Tatooine-Like Planet Outside the Solar System May Orbit Two Failed Stars, Scientists Say NEW YORK (AP) — A new Tatooine-like planet outside the solar system may orbit two failed stars ...

The sun has produced stunning auroras on Earth in recent years as solar activity has peaked—but expect more in coming years ...

As Europe increases its reliance on solar energy to meet climate and energy security targets, a growing atmospheric ...