Astronomers have been left puzzled by the discovery of an unusually large planet orbiting a remarkably small star, a cosmic ...

WASHINGTON (Reuters) -Astronomers have spotted a cosmic mismatch that has left them perplexed - a really big planet orbiting a really small star. The star is only about a fifth the mass of the sun.

As a result of the International Astronomical Union’s 2006 demotion of Pluto from planet to dwarf planet, our solar system ...

A possible new dwarf planet has been discovered at the edge of our solar system, so far-flung that it takes around 25,000 ...

Giant planets are not rare per se — after all, we have four in our own solar system. Such large worlds are, however, rarely ...

Ancient Greek astronomers likely observed Uranus as a star, but limited tools and geocentric views kept them from recognizing ...

Something incredible just happened in our own cosmic backyard. For the first time from Earth, scientists have watched as a ...

Science teaches us that stars are much larger than planets, but what about large planets that orbit small stars? This is what ...

The atmosphere itself is… not so fine. It's mostly carbon dioxide, which hey, it's what plants crave, but also a lot of ...

What's happening in the skies over North Texas this month? June holds some spectacular sights in the night and morning sky.

But a team of scientists has created a new way to answer whether aliens exist. Daniel Apai, an astrophysicist and ...

The universe is a complete unknown to humans. We are not yet able to control and understand the system in which Earth is located, as evidenced by the possible discovery made by a g ...