New Mass Extinction Asteroid Theory!

"The impactor believed to have wiped out the dinosaurs and other life
forms on Earth some 65 million years ago has been traced back to a
breakup event in the main asteroid belt. A joint U.S.-Czech team from
Southwest Research Institute (SwRI) and Charles University in Prague
suggests that the parent object of asteroid (298) Baptistina disrupted
when it was hit by another large asteroid, creating numerous large
fragments that would later create the Chicxulub crater on the Yucatan
Peninsula as well as the prominent Tycho crater found on the Moon."

http://www.physlink.com/News/070907A...Extinction.cfm


Double-A