Eris
Discovery! Possible Dwarf Planet Found Far Beyond Pluto’s Orbit
What is a dwarf planet? Some astronomers have been asking that question after Pluto was demoted from planethood almost a…
Makemake’s Mysteriously Missing Atmosphere
Artist's impression of the surface of Makemake, a dwarf planet beyond Pluto (ESO/L. Calçada/Nick Risinger) It turns out there's no…
Are Pluto and Eris Twins?
[/caption] Back a couple of weeks ago, I wrote an article highlighting the debate between scientists on which dwarf planet…
Pluto or Eris: Which is Bigger?
[/caption] The controversy between Pluto and Eris regarding their status as "largest dwarf planet" continues. During a joint meeting of…
Stellar Occultation by Eris
On November 6, 2010, the dwarf planet Eris occulted a faint 16 magnitude star and this was the first time…
Eris and Pluto: Two Peas in a Pod
[/caption] Or two dwarf planets in the Kuiper Belt… Eris -- that pesky big dwarf planet that caused all the…
2003 ub313
[/caption] In 2003, a celestial object was discovered, but little did astronomers know that this object, which was designated 2003ub313,…
What Are Planets?
[/caption] Throughout history, the definition of what a planet is has changed and meant various things at the same time…