Together, dwarf planets can help scientists learn a lot about ... Miriam Kramer Miriam Kramer worked as a staff writer for Space.com for about 2.5 years before joining Mashable to cover all ...

One of these dwarf planets actually orbits in between Mars ... Pluto's diameter is 1,477 miles (2,377km). With both celestial bodies being so similar in size, some consider Pluto and Charon ...

Astronomers have traced decades-old X-ray emissions from the Helix Nebula to a white dwarf possibly consuming planetary debris. Reports suggest a Jupiter-like planet may have been torn apart by ...

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. The Kuiper ...

That changed in 2006 when the International Astronomical Union declared that the faraway orb was a dwarf planet due to its location, known as the Trans-Neptunian region, according to NASA.

The center of the nebula is home to the white dwarf WD 2226-210 ... regular variation every 2.9 hours. That variation ...