- Beautiful and horrible photos of thunderstorms and their damage at The Big Picture
- God hinting at retirement
- A walk across the USA in stop-motion (via Nerdcore)
Okay, seriously: According to the mostly accepted opinion of scientists, it was an asteroid exploding 5–10 km4 above ground – which explains why there’s no big crater; results of a research group last year indicate that a lake a few miles away from the epicenter may be the result of the impact of a fragment.
Photo: Wikimedia Commons
Warning: A long scientific sentence without humor! (Yes, I need that from time to time.)
Astronomers have now found with calculations of asteroid orbits, chemical examinations of asteroids that crashed on Earth and temporal distribution of impacts also on Moon, Mars and Venus that probably the collision of an asteroid with a diameter of 170 km, called Baptistina, with a 60 km large one 160 (+30/-20) million years ago created 300 large fragments over 10 km (and many smaller ones) including the one that impacted near Chicxulub (Mexiko) 65 million years ago, which most likely was mainly responsible for the extinction of the dinosaurs.