New but tiny moon found circling distant Pluto
HOUSTON - July 20, 2011 (WPVI) -- Distant and tiny Pluto has been hiding something from Earth: another moon.
NASA announced Wednesday that the Hubble Space Telescope has found a fourth moon circling Pluto, which had been demoted from full planet to dwarf planet. Astronomers had been looking to see if Pluto had a ring, but instead they found another object circling the dwarf planet that is 3 billion miles from Earth.
But it is a mini-moon. It is only eight to 21 miles wide. Pluto's biggest moon, Charon (SHARE-on), is 80 times bigger. The other two moons are Nix and Hydra.
Until astronomers decide a name, this moon is called P4.
- NJ state police trooper among 3 injured in crash 16 min ago
- AccuWeather: Tracking light snow tonight
- Get the 6abc StormTracker app
- WATCH: Action News Online
- Malaysian police examine pilot's flight simulator
- Police: Driver, who hit pedestrian, hit by car
- Police: Man strikes own brother in hit and run
- Berks County man stabbed to death in Bahamas
- 2 men, sitting in SUV, shot in Chester
- Victim critical after stabbing in Frankford
- 2 women injured in Overbrook fire
- Crimea votes on Ukraine secession
- Comedian David Brenner, 'Tonight' favorite, dies
- Book 'em! Wilmington cop donates books to kids 48 min ago