posted on Jul, 20 2011 @ 05:07 PM
the hubble telescope has discovered a new moon orbiting pluto which was nicknamed P4. P4 is 9 miles (14 km across) or if it was darker than it would
be as large as 25 miles across (40 km) with a magnitude of 26 which is a tenth as bright as Nix. it orbits pluto every 32 days at the distance of
37,000 miles (59,000 km) and now the fourth moon and the total of planetary satellites to 171. astronomers think the moons formed when a large object
collided with pluto. now when New Horizons reaches pluto it will have to take a longer time to study P4.