Travelers in the Night - 4E & 5E: A Bad Day for Dinosaurs & The Tunguska Event


Manage episode 237596922 series 49427
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Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006.

Today's 2 topics:

- Scientific evidence suggests that it was a bad day for non-avian dinosaurs when a large asteroid or a comet crashed into the Earth about 66 million years ago.

- The Tunguska event occurred on June 30, 1908. It appears to have been caused by a small asteroid or comet which exploded 3-6 miles above the Earth's surface. It is the largest impact event in recorded history.

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1643 episodes available. A new episode about every day averaging 25 mins duration .