Popular Posts Last 7 days_$type=three$meta=0$snip=0$rm=0$count=9$show=/search/label/Popular

Popular Posts Last 30 days_$type=three$meta=0$snip=0$rm=0$count=9$show=/search/label/Popular

Popular Posts Last year_$type=three$meta=0$snip=0$rm=0$count=9$show=/search/label/Popular

Popular Posts All time_$type=three$meta=0$snip=0$rm=0$count=9$show=/search/label/Popular

Islamophobia_$type=carousel$h=350$show=/search/label/Muslim%20World

Saudi Arabia$type=two$count=2$h=250$space=1$icon=1$m=0$sn=0$rm=0$show=/search/label/Muslim%20World

Iran_$type=three$count=3$h=250$space=1$icon=1$m=0$sn=0$rm=0$show=/search/label/Muslim%20World

Palestine$type=three$author=hide$comment=hide$rm=hide$date=hide$show=/search/label/Muslim%20World

Close call: passing asteroid to test Earth's warning systems

SHARE:

The 2012 TC4 asteroid, seen at the center of this composite photo from the European Space Agency, will pass closer to Earth than the Moon

PARIS -  A house-size asteroid will give Earth a near-miss Thursday, passing harmlessly inside the Moon's orbit while giving experts a rare chance to rehearse for a real-life strike threat.

That represents about an eighth of the distance between the Earth and the Moon.


NASA's Mike Kelley, who leads the exercise to spot, track and intimately probe the transient visitor, insisted there was "no danger. Not even for satellites".

"We've now been observing TC4 for two months, so we have very accurate position information on it, which in turn allows very precise calculations of its orbit," which will not cross that of Earth nor its satellites, he told AFP.

As its name suggests, the object was first spotted five years ago when it called on Earth at about double Thursday's projected distance, before disappearing from view.

It is 15 to 30 metres (50 to 100 feet) wide -- about the size of the meteoroid that exploded in the atmosphere over Chelyabinsk in central Russia in 2013 with 30 times the kinetic energy of the atomic bomb dropped on Hiroshima.

The resulting shockwave blew out the windows of nearly 5,000 buildings and injured more than 1,200 people.

While the Chelyabinsk event caught everyone unawares, TC4 is one of thousands of space rocks whose whereabouts are known.

Millions are not.

On its 609-day loop around the Sun, TC4 will return to Earth in 2050 and 2079, according to Ruediger Jehn of the European Space Agency's Near-Earth Object programme in the Netherlands.

"We know today that it will also not hit the Earth in the year 2050, but the close flyby in 2050 might deflect the asteroid such that it could hit the Earth in the year 2079," he told AFP by email.

With a one-in-750 chance of hitting the planet then, TC4 is listed at number 13 on the "risk list" of objects posing even the remotest impact risk.

- 'We are practicing' -


"We need to make very precise observations to be able to better predict the return in the year 2050," Jehn said.

Flybys like this one are actually quite common -- about three objects similar in size to TC4 graze past at a similar distance every year.

What makes TC4 special is that it has been chosen to test the global asteroid pre-warning system, fed by a network of observatories, universities and labs around the world.

The asteroid's close approach will allow teams to evaluate how accurate they were in predicting its orbit and size, while using telescopes to learn more about its composition.

"For us this is a test case," said Jehn's colleague Detlef Koschny. "We are practicing for the real serious case."

Many scientists believe the Earth will once again be hit by a space rock of the size that wiped out the dinosaurs, though nobody knows when.

And even if they become better at predicting a strike, there is very little to be done about it, for now.

Futuristic projects mooted to deflect or destroy incoming space rocks have come to nought so far, and the only strategy would be to evacuate people in zones at risk.

TC4 will make its closest approach to Earth just before 0541 GMT on Thursday, at a point south of Australia, according to ESA and NASA.

It will not be visible to the naked eye nor with regular binoculars, "but it can be seen in the night of 11-12 October until about 4.00 am from European observatories," Jehn said.

COMMENTS

Name

Ads,5,Afghanistan,69,Africa,17,Americas,4,Animals,36,Asia,185,Australia,9,Austria,3,Bahrain,2,Bangladesh,16,Barcelona,1,Belgium,3,Brunei,1,Business,1239,Canada,2,Catalan,80,China,111,Cuba,3,Egypt,21,Europe,207,Fitness,14,France,22,Germany,33,Headlines,11,Health,168,Hillary Clinton,199,Hong Kong,1,Hungary,1,Iceland,1,India,100,Indonesia,8,International,75,Iran,74,Iraq,72,Ireland,2,Islamophobia,19,Israel,8,Italy,2,Japan,26,Jordan,1,Kenya,5,Kosovo,1,Kuwait,3,Lebanon,2,Libya,2,Lifestyle,302,Lithuania,1,Malaysia,12,Malta,1,Maxico,3,Middle East,111,Muslim World,572,Myanmar,32,Nawaz Sharif,5,Nepal,3,Netherlands,2,New Zealand,8,Niger,1,Nigeria,1,Nobel Prize,81,North Korea,48,Norway,1,Opinion,26,Pakistan,1021,Palestine,35,Philippine,11,Pics,66,Poland,2,Popular,1,Qatar,93,Rohingya,118,Russia,36,Rwanda,1,Saudi Arabia,80,Science,144,Serbia,2,Showbiz,347,Somalia,4,South Africa,1,South Korea,5,Spain,49,Sports,1289,Sudan,1,Sweden,1,Switzerland,2,Syria,104,Taiwan,2,Technology,437,Thailand,4,Today IN History,19,Top News,983,Tunisia,1,Turkey,73,U.S.,270,UAE,21,UK,46,Ukrain,2,Venezuela,4,Videos,75,Vietnam,2,World,4679,Yemen,21,
ltr
item
Muslim Global: Close call: passing asteroid to test Earth's warning systems
Close call: passing asteroid to test Earth's warning systems
A house-size asteroid will give Earth a near-miss Thursday, passing harmlessly inside the Moon's orbit while giving experts a rare chance to rehearse for a real-life strike threat.
https://3.bp.blogspot.com/-QULv-87gdD0/WdzgYZiXfKI/AAAAAAAAjzw/D1aa-Mcib4cfZWIrrcH9JHIS66Hfx5XdgCLcBGAs/s640/passing%2Basteroid%2Bto%2Btest%2BEarth%2527s%2Bwarning%2Bsystems.jpg
https://3.bp.blogspot.com/-QULv-87gdD0/WdzgYZiXfKI/AAAAAAAAjzw/D1aa-Mcib4cfZWIrrcH9JHIS66Hfx5XdgCLcBGAs/s72-c/passing%2Basteroid%2Bto%2Btest%2BEarth%2527s%2Bwarning%2Bsystems.jpg
Muslim Global
http://www.muslimglobal.com/2017/10/close-call-passing-asteroid-to-test.html
http://www.muslimglobal.com/
http://www.muslimglobal.com/
http://www.muslimglobal.com/2017/10/close-call-passing-asteroid-to-test.html
true
616431133175714168
UTF-8
Loaded All Posts Not found any posts VIEW ALL Readmore Reply Cancel reply Delete By Home PAGES POSTS View All RECOMMENDED FOR YOU LABEL ARCHIVE SEARCH ALL POSTS Not found any post match with your request Back Home Sunday Monday Tuesday Wednesday Thursday Friday Saturday Sun Mon Tue Wed Thu Fri Sat January February March April May June July August September October November December Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec just now 1 minute ago $$1$$ minutes ago 1 hour ago $$1$$ hours ago Yesterday $$1$$ days ago $$1$$ weeks ago more than 5 weeks ago Followers Follow THIS CONTENT IS PREMIUM Please share to unlock Copy All Code Select All Code All codes were copied to your clipboard Can not copy the codes / texts, please press [CTRL]+[C] (or CMD+C with Mac) to copy