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
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Brooklyn Bridge Park in Brooklyn, New York
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Gifford Pinchot National Forest
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Summer solstice
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Salmon migration in full swing
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Ölüdeniz, Turkey
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Red fox
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International Whale Shark Day
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Bald cypress trees in Georgia
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Celebrating Helsinki’s birthday at the Kiasma Museum
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Waiting for the perfect shot
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Drop in on International Surfing Day
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Methoni Castle, Messenia, Greece
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The natural ice wall of Misotsuchi, Chichibu, Japan
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Mekong River Delta, Long An, Vietnam
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National Museum of African American History and Culture
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Hut, hut, hike!
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Cheese! We ll go somewhere where there s cheese!
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Yosemite National Park, California
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Twas a night just like tonight
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Children at play for International Day of Friendship
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National Park Week: Canyonlands National Park, Utah
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Presidents Day
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Fossil Day
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A spectacle unlike any other
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New Years Eve
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Thomsons gazelles, Maasai Mara, Kenya
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Village of Zahara de la Sierra, Cadiz, Spain
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Heri es-Swani in Meknes, Morocco
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Combating extinction with citizen science
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At ease, it’s Armed Forces Day
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