Each scar on Earth from a meteorite impact tells a story—from the asteroid that wiped out the dinosaurs to the lesser-known craters that dot the planet. Asteroid Day highlights ongoing research into asteroids and the potential threats they pose. Started in 2015 and backed by the United Nations, this day marks the anniversary of the Tunguska event—a massive explosion that occurred in Siberia on June 30, 1908. This explosion flattened over 800 square miles of Siberian forest near the Tunguska River. The blast released energy equal to 10–15 megatons of TNT, a standard measure of explosive force. Since then, craters like Arizona"s Barringer, Quebec"s Manicouagan, and others have helped scientists study what happens when space rocks hit Earth.
Asteroid Day
Today in History
More Desktop Wallpapers:
-
Traffic jam on the caribou highway
-
International Tea Day
-
Polar bear season in Manitoba
-
Celebrating Norwegian Constitution Day
-
Frankenstein Friday
-
Greece celebrates its independence
-
Celebrating migrations
-
In the footsteps of Leopold Bloom
-
Wander the ancient medina
-
World Space Week begins
-
Have a ‘beary’ good Earth Day
-
On this shore, history was made
-
Belted Galloway cows
-
A picture-perfect day on Trillium
-
Grandparents Day
-
World Photography Day
-
International Womens Day
-
The rainbow connection
-
Hawai i Volcanoes National Park at 106
-
Oymyakon, Russia
-
Memorial Day
-
World Theatre Day
-
Canadian Thanksgiving
-
In the Supertree Grove
-
Celebrating World Olive Tree Day
-
Kagami-ike, Nagano, Japan
-
Spotted eagle rays in the Galápagos Islands
-
A whale of a picture
-
An ancient sailing tradition takes to the water
-
What’s blooming in New Zealand?
Bing Wallpaper Gallery

