moon to spoil meteor show astronomers
Last Updated : GMT 05:21:58
Arab Today, arab today
Arab Today, arab today
Last Updated : GMT 05:21:58
Arab Today, arab today

usual number of shooting stars visible

Moon to spoil meteor show: astronomers

Arab Today, arab today

Arab Today, arab today Moon to spoil meteor show: astronomers

A gibbous moon -- more than half full, but not quite fully illuminated
Paris - Arabs Today

A bright Moon will outshine the annual Perseids meteor shower, which will peak Saturday with only a fifth the usual number of shooting stars visible to Earthlings, astronomers say.

The Moon will be more than half-full, in a so-called gibbous phase, which means its light will spoil stargazers' view in a similar way to that of urban light pollution.

"To be honest, it's not a good year" for the Perseids, said Robert Massey, acting executive director of the Royal Astronomical Society (RAS) in London.

"You might, if you're lucky, see maybe 20 an hour," he told AFP.

The Perseids happen when Earth hits a belt of debris left behind by the comet Swift-Tuttle on its elongated, 133-year orbit around the Sun.

Each shooting star is a piece of comet dust, burning up from friction as it hits Earth's atmosphere.

Normally, Northern Hemisphere viewers are treated to a spectacle of about 100-120 visible shooting stars per hour when the phenomenon peaks around mid-August -- depending on the Moon and the weather.

Last year, there was an unusual "outburst" with more than double the usual fireball activity as Earth passed through especially dense "ribbons" of debris within the comet's dust belt.

"This year, we are expecting enhanced rates of about 150 (meteors) per hour or so, but the increased number will be cancelled out by the bright Moon, the light of which will wash out the fainter Perseids," states a NASA blog.

The Moon was full on August 7, and will have waned to approximately 80 percent illumination by Saturday.

- Not all is lost -

"This is not much better than a full moon and will certainly pose a challenge in viewing the Perseids this year," said the International Meteor Organisation (IMO).

This means it would make little difference if you sought out a rural area with little artificial light pollution -- conditions usually recommended for meteor watching.

The experts advised trying to catch a glimpse before the Moon rises around 11:00pm local time on Friday.

Although there will be fewer at that hour, "these meteors tend to be very long and long-lasting so it is definitely worth trying to see some of them," according to the IMO website.

Later in the night, it would be best to turn one's back on the Moon to try and catch a glimpse of the brightest-burning meteors.

The show in 2018 should be better, said Massey, when a thin crescent moon will set early, leaving a dark canvass for the Perseids to do their magic.

The yearly show got its name because the stars appear to fly out of the constellation Perseus.

It is also known as the "Tears of St. Lawrence" in honour of a Christian saint tortured to death by the Romans in AD 258.

According to legend, Laurentius was martyred on a iron grill over a fire, during which ordeal he is said to have quipped to his persecutors: "Turn me over. I'm done on this side!"

He is a patron saint of cooks.

Source: AFP

arabstoday
arabstoday

Name *

E-mail *

Comment Title*

Comment *

: Characters Left

Mandatory *

Terms of use

Publishing Terms: Not to offend the author, or to persons or sanctities or attacking religions or divine self. And stay away from sectarian and racial incitement and insults.

I agree with the Terms of Use

Security Code*

moon to spoil meteor show astronomers moon to spoil meteor show astronomers

 



Name *

E-mail *

Comment Title*

Comment *

: Characters Left

Mandatory *

Terms of use

Publishing Terms: Not to offend the author, or to persons or sanctities or attacking religions or divine self. And stay away from sectarian and racial incitement and insults.

I agree with the Terms of Use

Security Code*

moon to spoil meteor show astronomers moon to spoil meteor show astronomers

 



Arab Today, arab today Modern colorful bedroom renovation

GMT 11:23 2017 Thursday ,21 December

Modern colorful bedroom renovation
Arab Today, arab today For the Variety of Interior Design Styles

GMT 11:14 2017 Tuesday ,19 December

For the Variety of Interior Design Styles

GMT 21:39 2017 Tuesday ,17 October

CBE chief: Egyptian banking system is strong

GMT 05:02 2018 Tuesday ,16 January

Spain expected to replace US

GMT 09:19 2018 Thursday ,22 November

AIIB Jin Liqun praises Suez Canal projects

GMT 17:37 2016 Tuesday ,20 September

Amal discusses effort to legally fight Daesh

GMT 08:03 2015 Wednesday ,04 March

Martin Parr shoots a campaign for Le Bon Marché

GMT 16:31 2018 Saturday ,27 October

Why no one in Jordan believes the weather forecasts

GMT 04:57 2017 Wednesday ,27 September

Candid Magazine appoints lifestyle editor

GMT 10:07 2016 Saturday ,10 December

Over Chile 10 years after death

GMT 23:45 2017 Thursday ,13 April

Oman Air first Nairobi flight touches down

GMT 20:09 2017 Thursday ,09 February

Marzouq al Ghanim arrives in Cairo

GMT 23:47 2017 Wednesday ,19 July

Moon to meet ruling, opposition party leaders

GMT 15:37 2017 Thursday ,26 October

Iraq PM wins Iran support as forces battle IS, Kurds

GMT 23:52 2017 Monday ,09 January

Kuwait deports nearly 80 expats a day

GMT 19:35 2017 Tuesday ,21 February

Blast in Somalia kills 20 in Mogadishu marketplace
Arab Today, arab today
 
 Arab Today Facebook,arab today facebook  Arab Today Twitter,arab today twitter Arab Today Rss,arab today rss  Arab Today Youtube,arab today youtube  Arab Today Youtube,arab today youtube
arabstoday arabstoday arabstoday arabstoday
arabstoday arabstoday arabstoday
arabstoday
بناية النخيل - رأس النبع _ خلف السفارة الفرنسية _بيروت - لبنان
arabstoday, Arabstoday, Arabstoday