Latest about Dwarf Planets
See dwarf planet Haumea at its closest to Earth in 285 years tonight
Dwarf planet Haumea reaches both opposition and perigee on April 20, making this a prime opportunity to see the dwarf planet in the night sky.
Spot dwarf planet Ceres during the new moon tonight
The dark skies of the new moon will offer skywatchers the chance to spot Ceres tonight (March 21), as the dwarf planet reaches opposition.
Astronomers spy new class of dark, water-rich asteroids like dwarf planet Ceres
Astronomers interpret the spectra of 10 well-known dark asteroids and find them to be water-rich like the dwarf planet Ceres.
A dwarf planet beyond Neptune has a mysterious ring that astronomers can't explain
A mini-planet orbiting in the frigid outer reaches of the solar system has a Saturn-like ring of dust and debris that defies the rules of physics, a new study has revealed.
NASA seeks origin of 'weird' fast-spinning dwarf planet Haumea
The dwarf planet Haumea may be the weirdest object in the solar system. Now NASA researchers may finally understand how it was formed.
Mars Mission May Be Curtain Call for Plutonium-Powered Spacecraft
With a worldwide shortage of plutonium-238, future planetary science missions are in jeopardy.
Full-Scale Production of Plutonium Spacecraft Fuel Still Years Away
The United States has begun manufacturing nuclear spacecraft fuel for the first time in a generation, but full production of the stuff likely won't begin until 2023 at the earliest.
