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The Perseids

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Greta Holmes

on 31 January 2014

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Transcript of The Perseids

The Perseids
- Meteor shower

When and where?
Northern Hemisphere
Annual August Perseid meteor shower
This shower is visible in the Southern Hemisphere, too, though to a lesser extent.
No matter where you live worldwide, the 2013 Perseid meteor shower will probably be at its best on the nights of August 11-12 and/or August 12-13.
Every year, from around July 17 to August 24, our planet Earth crosses the orbital path of Comet Swift-Tuttle, the parent of the Perseid meteor shower.
Debris from this comet litters the comet’s orbit, but we don’t really get into the thick of the comet rubble until after the first week of August. The bits and pieces from Comet Swift-Tuttle slam into the Earth’s upper atmosphere at some 210,000 kilometers (130,000 miles) per hour, lighting up the nighttime with fast-moving Perseid meteors.
Comet Swift-tuttle
Comet Swift-tuttle has an oblong orbit, which takes it outside the orbit of Pluto when farthest from the sun, and inside the Earth's orbit when closest to the sun.
It orbits the sun in 133 years.
Why is it called the Perseids?
They are called the Perseids because they originate from the constellation Perseus
Full transcript