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
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The confluence of the Arve and Rhône Rivers
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Humpbacks return to the Inside Passage
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A treaty for science
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World Meteorological Day
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International Museum Day
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Crescent Lake near Dunhuang, China
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Virgin Islands National Park established
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Anza-Borrego Desert State Park, California
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Of moles and liquid nitrogen
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Norway s Kjeragbolten boulder
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Happy 800th, Salisbury Cathedral
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Presidents Day
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Superbloom in Carrizo Plain National Monument, California
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Life in the slow lane
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An emerald isle of the Emerald Isle
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World Lake Day in the Faroe Islands
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A species no longer at risk
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World Photography Day
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Telašćica Nature Park, Dugi Otok, Croatia
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Haaga Rhododendron Park
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Ringing in the new year at Teotihuacan
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An uncommonly cool critter
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Kinder Scout, Peak District National Park, England
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April Fools Day
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Birds and bees, and why they re so important
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Dhaka, Bangladesh
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Storseisundet Bridge, Norway
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World Hello Day
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It s only Wednesday
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Antarctica Day
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