Did something hit Jupiter on July 19?
Space Weather News For July 19, 2009
http://spaceweather.com
JUPITER IMPACT? On July 19th, a veteran observer of Jupiter in Australia photographed
a fresh dark "scar" in Jupiter's cloudtops; the feature resembles the Shoemaker-Levy 9
impacts of 1994.
It is possible that Jupiter has been struck anew by an asteroid or comet.
Astrophotographers around the world should train their optics on Jupiter to confirm the event and monitor its progress.
Visit http://spaceweather.com for photos and updates.
Also check this Web site on the subject:
http://www.acquerra.com.au/astro/ObsReport/jupiter-impact.html