What must our ancestors have thought when they saw meteors light up the night sky? Was it terrifying or an event of wonder? Thankfully, we now know that this celestial cascade is a harmless annual event. The Perseid meteor shower thrills stargazers from mid-July to late August and is due to peak today. The Perseids are caused by Earth passing through debris left behind by the Comet Swift-Tuttle. When the cosmic debris hits our atmosphere, it disintegrates in a colorful, fiery light display. It"s a good night to catch the Perseids if you can—the moon is projected to only be 10% illuminated, so the meteors should really stand out against the dark sky.
Perseid meteor shower over Oregon
Today in History
More Desktop Wallpapers:
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Oh, to sleep under the northern lights
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Black Fell in England s Lake District
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National Find a Rainbow Day
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A whale of a hug
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International Day of Friendship
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Great horned owl
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Dallas Latino Cultural Center for Hispanic Heritage
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Seven Magic Mountains art installation, Jean Dry Lake, Nevada
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A Christmas market with a long history
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Nakupenda Beach Nature Reserve, Zanzibar, Tanzania
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Who s wearing such cute hats?
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Gone ‘lightseeing’ in Berlin
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Procida, Italy
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In praise of the pipes
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Young black caiman, Tambopata National Reserve, Peru
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A glittering diamond in the rough
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Arctic fox in Norway
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Space-age style by the sea
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All hail the king of shrubs
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A horse of many colors
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Guild houses of Grand-Place, Brussels, Belgium
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Commemorating the life of a famous railroad conductor
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A winter light show
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A century since Tut s tomb was discovered
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The frog prince?
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Solar Impulse 2 in Honolulu
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National Park Week continues
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National Park Week: Guadalupe Mountains National Park
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A Bengal tiger in Ranthambore National Park, India
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The birth of Bauhaus
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