Planet Nine may be even more exotic than astronomers had thought. The putative world, which some scientists think lurks unseen far beyond Pluto’s orbit, could be a former “rogue planet” that was ...

The Solar System does not have a clear border. The influence of the Sun in certain domains is small enough for the Voyager probes to have escaped into interstellar space, but there are comets and ...

WASHINGTON — Stargazers will have a special chance to see seven planets align in the night sky this week as Mercury joins Venus, Mars, Jupiter, Saturn, Uranus and Neptune in a planetary parade. In ...

The search for an unknown planet in our solar system has inspired astronomers for more than a century. Now, a recent study suggests a potential new candidate, which the paper’s authors have dubbed ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London.View full profile Alfredo has a PhD in Astrophysics and a Master's in Quantum ...

Planet Nine may be even more exotic than astronomers had thought. The putative world, which some scientists think lurks unseen far beyond Pluto's orbit, could be a former "rogue planet" that was ...