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

For the better part of a century, we believed there were nine planets in our solar system, with Pluto being the farthest from the sun. Since the discovery of more Pluto-sized dwarf planets, that ...

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

A surprising chemical difference between Pluto and Sedna, another dwarf planet in the distant Kuiper Belt, is helping scientists nail down their respective masses, a new study reports.

Scientists estimate there are ~1 septillion (1 followed by 24 zeros) planets in the observable universe. This figure is based ...

That's not just because it's too far away. In 2006, the International Astronomical Union (IAS) reclassified Pluto as a dwarf planet. That decision came several years after discovering the Kuiper ...

Out past Neptune are countless small icy and rocky bodies called Trans-Neptunian Objects (TNOs), and many of these have moons ...

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There are also five additional celestial bodies called dwarf planets, including Pluto, Ceres, Eris, Haumea and Makemake. Grad student discovers planet orbiting around nearby star, astronomers say ...

WEATHER AT YOUR SCHOOL WAS OUT OF THIS WORLD TODAY! OUR MARISSA VIGEVANI HEAD OVER TO ST ALBANS TOWN EDUCATIONAL CENTER TO ...