Today is Asteroid Day, and it"s a reminder that as our planet follows its path around the sun, it encounters a lot of stuff. Science tells us that every day, Earth"s atmosphere is hit with roughly 100 tons of dust and particles the size of a grain of sand. And every year, at least 30 small asteroids enter the atmosphere, only to burn up before touching the ground. NASA says it"s pretty much guaranteed that at least one of them will be about the size of a car. As time progresses, the likelihood increases that even larger celestial rocks will hit the ground and cause significant damage.
Asteroid Day
Today in History
More Desktop Wallpapers:
-
Horsetail Fall in Yosemite National Park, California
-
Reflecting on fall
-
Santorini through the clouds
-
Sea fireflies at the seashore
-
Autumn in the cypress swamp
-
World Environment Day
-
Adorable activism
-
Old Rock Day
-
Aït Benhaddou, Morocco
-
Przewalskis horses, Hustai National Park, Mongolia
-
It’s not a pinecone, it’s a pangolin
-
National Go Birding Day
-
Canada Day
-
A tower of light
-
Vacuum Chamber 5 at Glenn Research Center
-
Celebrating World Water Day
-
Mount Fuji Day
-
Monarch butterflies migrate south
-
Winter solstice
-
Burchells zebras for International Zebra Day
-
Salt of the earth
-
Lanterns alight in Pingxi
-
Happy Thanksgiving!
-
Yosemite National Park, California
-
It s Mountain Day in Japan
-
International Day for Biosphere Reserves
-
Celebrating the first day of spring
-
Three cheers for polar bears!
-
A view from the top
-
Heron lies the Salton Sea
Bing Wallpaper Gallery

