Planet Jupiter
Mystery impact leaves Earth-size mark on Jupiter
by admin on Jul.21, 2009, under NASA, Planet Jupiter, Technology
Jupiter is sporting a new scar after a mystery object hit the gaseous planet this week, NASA scientists say.
An amateur astronomer in Australia noticed the new mark on the planet Sunday and tipped off scientists at NASA’s Jet Propulsion Laboratory (JPL) in Pasadena, California, who then confirmed it was the result of a new impact, NASA said.

It’s not clear what the object was that crashed into Jupiter’s poisonous atmosphere.
Glenn Orton, a JPL scientist, told the magazine New Scientist that it could have been a block of ice from somewhere in Jupiter’s neighborhood, or a wandering comet that was too faint for astronomers to have detected before impact.
“We were extremely lucky to be seeing Jupiter at exactly the right time, the right hour, the right side of Jupiter to witness the event. We couldn’t have planned it better,” Orton said in a NASA interview.
Scientists also don’t know how large the object was, but the impact scar it created is about the same size as Earth, JPL astronomer Leigh Fletcher told the magazine.
It is only the second time scientists have been able to observe such an impact on Jupiter. The first happened 15 years ago, when comet Shoemaker-Levy 9 broke into 21 pieces and hit the planet’s atmosphere.
“Given the rarity of these events, it’s extremely exciting to be involved in these observations,” Fletcher said in a NASA interview.
