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To find out, Wang and colleagues

To find out, Wang and colleagues recorded the songs of male and female Chinese alligators. The team then played the calls to captive alligators of different genders, one by one, in a water-filled testing arena at the semiwild Anhui Research Center for Chinese Alligator Reproduction in the city of Xuancheng (map).

The researchers had expected females freshwater pearl to draw closer to the speaker that was playing recordings of males. Surprisingly, though, males and females reacted the same way to the calls of either gender.

All the alligators stayed put, and about 75 percent of the alligators joined the recorded song.

This response suggests that alligators single pearl necklace don’t sing to compete for prospective mates, the study says. But because the choruses increase during mating season, Wang said, they must have something to do with sex.

Maybe, he suggested, the singing is a way freshwater pearl jewelry of detecting other alligators in the area so mating groups can be formed—a kind of reptilian romantic-networking system.

Next, to confirm his theory, Wang plans to test alligators in the wild and to study alligator singing outside of mating season, when, presumably, the songs are about something other than seduction

Posted: 7:06 PM, Nov. 16, 2009
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The Orionid meteors are created

You don’t need binoculars,” Cochran added. “Just lie back in a reclining chair or on a blanket and enjoy the show.”

But dress warmly, Hammergren nugget pearl advised: “You always cool off more than you think you will just lying there—that’s a lesson novice astronomers learn real fast!”

Orionid Meteor Shower’s Famous “Parent”

The Orionid meteors are created by a band of small particles that circle through the solar system in the orbit of Halley’s comet.

The comet is visible to the naked eye, and in the freshwater pearl jewelry 1700s astronomer Edmond Halley was the first to correctly predict its return, calculating that the comet comes back every 76 years.

Later studies revealed freshwater pearl strands historical sightings of Halley’s comet—in circa-240 B.C. Chinese records and in medieval England’s 11th-century Bayeux Tapestry, for example.


Posted: 7:04 PM, Nov. 16, 2009
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A big, bright moon can make it hard

At this time of year, Orion rises at about 11 p.m. local time worldwide, so the best time to view the Orionids will be after midnight, Hammergren said.

According to Cochran, the 2009 Orionids shower will benefit from a moonless midnight sky.

A big, bright moon can make it hard to naughty castles spot streaking meteors. But the moon will be new during this year’s Orionids peak, she said, meaning it’ll be dim and will dip below the horizon not long after sunset.

For the best views, Hammergren and Cochran both recommend going to a dark site away from city lights and allowing enough time freshwater pearl earrings for your eyes to adjust to seeing fainter objects in the sky.

“You don’t need binoculars,” Cochran added. “Just lie back in a reclining chair or on a blanket and enjoy the show.”

But dress warmly, Hammergren pearl strand wholesale advised: “You always cool off more than you think you will just lying there—that’s a lesson novice astronomers learn real fast!”


Posted: 6:53 PM, Nov. 16, 2009
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The mass of a comet is basically

But it wasn’t until the 1800s that astronomers noticed that some large groupings of “shooting stars” also appeared at regular leisure chairs intervals. Still later, those groupings were linked to comets.

The mass of a comet is basically a fifty-fifty combination of dirt and ice left over from when the planets were forming about 4.5 billion years ago, the McDonald Observatory’s Cochran explained.

When a comet comes into the inner wholesale pearl jewelry solar system—which includes Mercury, Venus, Earth, Mars, and the asteroid belt—the sun’s heat turns some of the comet’s ice into gas. Without the ice to hold them to the comet, some rocky fragments fall away.

“That stuff doesn’t just disappear,” Cochran said. “When Earth’s orbit intersects with those dust streams, the particles hit the upper wholesale pearl jewelry atmosphere, creating meteors.


Posted: 6:51 PM, Nov. 16, 2009
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A fragment shed by a comet is

A fragment shed by a comet is usually no larger than a grain of sand. But sometimes those grains travel together in groupings, or clumps, which can be held together by gravity for hundreds of years, Adler’s Hammergren added.

Since these clumps form when the biwa pearl comet is near the sun, Earth is most likely to hit them in years when the comet is once again close to the planet—resulting in a more spectacular meteor shower.

For example, next month astronomers pearl jewelry wholesale expect Earth to pass through a clump of material left behind by comet Tempel-Tuttle, which might boost the annual Leonid meteor shower to produce as many as 500 meteors an hour.

But Halley’s comet is now almost at its pearl jewelry wholesale farthest point away from the sun, Hammergren said, so “I wouldn’t expect a clump [for the Orionids] this year.”

Still, he said, for fans of the famous space rock, the Orionids in any year are “a great chance to see a piece of Halley’s comet in the sky.”


Posted: 6:50 PM, Nov. 16, 2009
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