There are eight official planets (sorry, Pluto) in our solar system: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and ...

Sky gazers will get a peek at what has been called a "parade of planets," where this time around, up to seven planets may ...

A very rare treat is about to grace Earth's night skies.

The BepiColombo spacecraft has sent back some incredibly detailed images of Mercury’s north pole. The snapshots were ...

Astronomers have discovered 85 possible exoplanets outside the Solar System which could potentially sustain life after ...

The newcomer replacing Pluto presently goes by “Planet Nine.” If and when it finally shows up, it will get the honor of a ...

NASA's Director of Planetary Science, Jim Green, discusses the Jan. 20 2016 Astronomical Journal science paper that points to ...

Astronomers believe that our solar system may still hold surprises, with ongoing efforts to find a hidden ninth planet, often referred to as Planet Nine or Planet X. If confirmed, this discovery ...

with a planet parade just a few weeks into the new year. A planet parade is when several of our solar system's planets are visible in the night sky at the same time. There will be six planets ...

Some stargazers are calling it a planetary parade: Every other planet in our solar system can be seen in the sky tonight.

It comes from a new study of the only star system ... However, exactly how that happens for a multi-planet star system — like our solar system — is unknown. The paper, published today in ...

New radio astronomy observations of ... But the formation process of multi-planet systems, like our own Solar System, is still poorly understood. The best example object to study multi-planet ...