For a few evenings around 28 February, every planet in the solar system will be visible in the night sky, thanks to a rare great planetary alignment. Here's how to make sure you don't miss this ...

To learn more about the solar system's eight planets ... The top finisher is a shocker Why Pluto isn't part of any planet parades For those people still scratching their heads, trying to figure ...

The relative quantities of volatile gases like methane and ethane can reveal key details about distant Kuiper Belt objects.

Gayan – stock.adobe.com There are eight planets in our solar system, nine if you count dwarf power planet Pluto. Because we live on Earth, the maximum number of planets we can see from our ...

Why was Pluto reclassified as a dwarf planet? One might think that it’s purely a matter of size. Mercury, the smallest of the ...

Ganymede, Jupiter's largest moon and the solar system's largest, is bigger than Mercury and the dwarf planet Pluto, with a diameter of 5,268 kilometers.

Once they are all in place, seven of the eight planets in our solar system will grace our sky. For much of the week, six of the planets may be visible, according to NASA. On Friday, however ...

The first time you may have heard the term ‘dwarf planet’ was when Pluto got demoted to one in 2006 (RIP). However, we actually have six in our Solar System. Pluto, Ceres, Makemake, Haumea, and Eris ...