Astronomers have confirmed a new planet in one of the youngest solar systems ever found, thanks to University of Arizona ...

Astronomers are closing in on one of the most tantalizing possibilities in planetary science, evidence that a previously unknown world may be lurking in the outer reaches of the solar system. The ...

Surprise, it's twins.

A new NASA spacecraft has started tracking the particle streams that can make a massive solar flare dangerous while mapping ...

What started as a mysterious red dot in images taken by University of Arizona astronomers has been confirmed as a huge, newly ...

Planets around other stars can help answer one of the greatest mysteries: How did we get here? How did the spinning disk of material left behind by our sun’s birth form our planet and its seven ...