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Orionid Meteor showers peak tonight


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#1 sevnson_71

 

sevnson_71

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Posted 20 October 2009 - 02:32 PM

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Robert Roy Britt
Editorial Director
SPACE.com Robert Roy Britt
editorial Director
space.com – 2 hrs 55 mins ago



The Orionid meteor shower is expected to put on a good show tonight into the predawn hours Wednesday, weather permitting.

This annual meteor shower is created when Earth passes through trails of comet debris left in space long ago by Halley's Comet. The "shooting stars" develop when bits typically no larger than a pea , and mostly sand-grain-sized, vaporize in Earth's upper atmosphere.

"Flakes of comet dust hitting the atmosphere should give us dozens of meteors per hour," said Bill Cooke of NASA's Meteoroid Environment Office.

People in cities and suburbs will see far fewer meteors, because all but the brightest of them will be overpowered by light pollution. The best view will be from rural areas (the moon will not be a factor, so dark skies will make for ideal viewing).

When and how to watch

The best time to watch will be between 1 a.m. and dawn local time Wednesday morning, regardless of your location. That's when the patch of Earth you are standing on is barreling headlong into space on Earth's orbital track, and meteors get scooped up like bugs on a windshield.

Peak activity, when Earth wades into the densest part of the debris, is expected around 6 a.m. ET (3 a.m. PT).

Some meteors could show up late tonight, too. Late-night viewing typically offers fewer meteors, however, because your patch of Earth is positioned akin to the back window of the speeding car.

The Orionids have been strong in recent years.

"Since 2006, the Orionids have been one of the best showers of the year, with counts of 60 or more meteors per hour," Cooke said.

Some of those counts come in flurries, so skywatchers should find a comfortable spot with as wide a view of the sky as possible. Lie back and allow 15 minutes for your eyes to adjust to the darkness, then give the show at least a half hour to play out through spurts and lulls. Meteors could appear anywhere in the sky, though traced back they will appear to emanate from the constellation Orion.

Telescopes and binoculars are of no use, because meteors move too quickly. Extra warm clothing is a must, and a blanket and pillow or lounge chair allows comfortable positioning so you can look up for long stretches.


http://news.yahoo.co...rpeaksovernight
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