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Meteor shower to streak across UAE sky

posted on 11/08/2009: 1553 views



Hundreds of meteors — the falling rocks from the annual passing of a comet — will light up the sky above UAE on August 12, astronomists said.

The celestial event began on July 17 and continues until August 24 but climaxes — with up to 10 meteors a minute — early in the morning of
August 12.

Hasan Ahmad Al Hariri, Dubai Astronomy Group President, encouraged residents to see the spectacle which appears to emanate from the constellation in the northern sky called Parshawyyat — Arabic for ‘bearer of Ghoul's head' — or Perseus named after the Greek
hero Perseus.

However, Al Hariri said the meteors are the debris falling from the Swift-Tuttle comet.

"Comets are basically like dirty snowballs — made of dirt and ice,” Al Hariri said.

"They are created at the outer rims of the solar system. As they move towards the sun, they warm up. The ice evaporates, taking chunks of dirt with it, leaving a tail behind the comet.

"The earth passes near this path every year and the meteors come from the material in the tail.”

Discovered back in 1862, this comet takes approximately 130 years to circle the sun. The majority of meteors are tiny marble size pebbles and dirt which burn up in the atmosphere but occasionally brighter ones occur — fireballs — that burn up upon entering
the atmosphere.

Ibrahim Al Jarawan, another UAE astronomer, in a statement on news agency WAM, said that a meteor's diameter was about 1mm to 1cm.

”Generally, meteors are like small dust balls that penetrate the hemisphere of the earth then melt and evaporate due to their friction and interaction with the higher air layers.

"We can see these shooting stars like a lightening straight line moving in the sky as fast as 11-72 km/second,” he said.

Al Jarawan said that while a falling star has no sound it can be heard when it goes through the atmosphere making a ‘whispering' noise. This is the fourth year the Dubai Astronomy Group has held observation nights for the Perseids meteor shower and Al Hariri said this year they would travel out to the desert on the Hatta Road to view the shower on the evening of August 11 to watch the meteors early on the morning of August 12.

Several other meteor showers happen during the year but Al Hariri said this was one of the best because of the brightness of the meteors, their frequency and that fireballs often
occurred too.

However, the viewing possibilities on the night will be limited by a bright moon which will make the meteors harder to see.

Al Hariri said residents needed to move out of the city, suggesting the beach or the desert, away from
light pollution.

Another factor which could make the meteors harder to see will be if a dust cloud occurs, as happened last week.

"Last year was really good because the moon was a new moon so there was no moon light. Even if the moon is at 20 per cent it is hard to see the meteors,” he said. "The weather, so far, is expected
to be good.”

Tips to view the meteor shower

Find an open area without any lights and away from city — beach or desert

No special equipment is needed

Take a picnic rug and some snacks and settle in

The meteor shower begins about midnight and is most intense between 1am and 2am

Observation trip

Dubai Astronomy is conducting an observation trip which anyone can attend

Gather at Emirates Cooperative Society at Tawar 3 at 8.30pm

Visit www.dubaiastronomy.com or contact Hasan Ahmad Al Hariri on 0506246172. – Khaleej Times

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