Simpson and Chen ran mathematical models looking at how differently sized Earth-like worlds would have affected the rest of ...

Stargazers will be treated to a dazzling six-planet "alignment" this January.

A rare 'planetary parade' will be visible to the naked eye in the UK this week, as Venus, Mars, Jupiter and Saturn sit in a ...

All seven of the other planets in our solar system are about to become visible at once in a great planetary alignment – ...

A new study claims it is possible an "alien visitor" could have warped our solar system during its earliest years.

Worlds will align for a "planetary parade" in January, with four bright and easily visible to the naked eye. But an even ...

When you first learned about the Solar System, you probably saw diagrams that made it look orderly, with planets arranged in ...

A powerful new tool comes online this year that could help astronomers locate the mysterious planet hiding somewhere beyond ...

In the early evening, look to the southwest and you'll see Venus (the brightest object in the sky after the Sun and Moon) and ...

Astronomers have discovered extremely powerful winds pummeling the equator of WASP-127b, a giant exoplanet. Reaching speeds ...

Although it's being mistakenly promoted as a "rare planetary alignment," one of the best "planet parades" in half a century ...