Skip to main content
Science & Space
CNN Europe CNN Asia
On CNN TV Transcripts Headline News CNN International About CNN.com Preferences
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
SERVICES
 
 
 
SEARCH
Web CNN.com
powered by Yahoo!

Leonids light up night sky

By Richard Stenger
CNN

Jarle Aasland captured this 2002 Leonid meteor over Norway hours before dawn
Jarle Aasland captured this 2002 Leonid meteor over Norway hours before dawn

   Story Tools

RELATED

(CNN) -- One of the most celebrated meteor showers peaked early Tuesday, sending hundreds or thousands of fireballs streaking through the atmosphere each hour.

The annual Leonids meteor shower takes place every November when the Earth passes through a debris trail left by a comet that sheds material as it swings near the sun every 33 years.

This year, our planet plowed through two clouds of debris from Comet Temple-Tuttle, providing peak periods some six hours apart overnight between November 18 and 19.

Astronomers predicted that viewers in Europe and North America might see several thousands of meteors per hour. But a full moon, fog and clouds diminished the show for many viewers on both continents.

The tiny fragments, often no bigger than sand grains, heat up and vaporize as they bounce across the upper atmosphere at speeds of about 160,000 mph (260,000 km/h).

The meteor concentration varies sporadically from year to year, depending on whether the Earth smacks into sparse or thick bands of the comet's debris.

During the 2001 show, observers saw up to 10,000 meteors an hour, the heaviest concentration of Leonids since 1966, when there were an estimated 150,000 shooting stars an hour during peak times.

The Leonids are so named because they seem to originate from the constellation Leo, otherwise known as the Lion.



Story Tools

Top Stories
Quake jitters hit California
Top Stories
CNN/Money: Security alert issued for 40 million credit cards
 
 
 
 
  SEARCH CNN.COM:
© 2004 Cable News Network LP, LLLP.
A Time Warner Company. All Rights Reserved.
Terms under which this service is provided to you.
Read our privacy guidelines. Contact us.
external link
All external sites will open in a new browser.
CNN.com does not endorse external sites.