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InvisibleJack Albertson
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Registered: 04/14/06
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Space rock on collision course
    #7694023 - 11/29/07 08:45 AM (16 years, 2 months ago)

By Dr David Whitehouse
BBC News Online science editor
An asteroid discovered just weeks ago has become the most threatening object yet detected in space.

A preliminary orbit suggests that 2002 NT7 is on an impact course with Earth and could strike the planet on 1 February, 2019 - although the uncertainties are large.

Astronomers have given the object a rating on the so-called Palermo technical scale of threat of 0.06, making NT7 the first object to be given a positive value.

From its brightness, astronomers estimate it is about two kilometres wide, large enough to cause continent-wide devastation on Earth.

Many observations

Although astronomers say the object definitely merits attention, they expect more observations to show it is not on an Earth-intersecting trajectory.


This asteroid has now become the most threatening object in the short history of asteroid detection

Dr Benny Peiser
It was first seen on the night of 5 July, picked up by the Linear Observatory's automated sky survey programme in New Mexico, US.

Since then astronomers worldwide have been paying close attention to it, amassing almost 200 observations in a few weeks.

Could it be deflected?

Dr Benny Peiser, of Liverpool John Moores University in the UK, told BBC News Online that "this asteroid has now become the most threatening object in the short history of asteroid detection".

NT7 circles the Sun every 837 days and travels in a tilted orbit from about the distance of Mars to just within the Earth's orbit.

Potential devastation

Detailed calculations of NT7's orbit suggest many occasions when its projected path through space intersects the Earth's orbit.

Researchers estimate that on 1 February, 2019, its impact velocity on the Earth would be 28 km a second - enough to wipe out a continent and cause global climate changes.

However, Dr Peiser was keen to point out that future observations could change the situation.

He said: "This unique event should not diminish the fact that additional observations in coming weeks will almost certainly - we hope - eliminate the current threat."

Easily observable

According to astronomers, NT7 will be easily observable for the next 18 months or so, meaning there is no risk of losing the object.

Observations made over that period - and the fact that NT7 is bright enough that it is bound to show up in old photographs - mean that scientists will soon have a very precise orbit for the object.

Dr Donald Yeomans, of the US space agency's (Nasa) Jet Propulsion Laboratory in California, told BBC News Online: "The orbit of this object is rather highly inclined to the Earth's orbit so it has been missed because until recently observers were not looking for such objects in that region of space."

Regarding the possibility of an impact, Dr Yeomans said the uncertainties were large.

"The error in our knowledge of where NT7 will be on 1 February, 2019, is large, several tens of millions of kilometres," he said.

Dr Yeomans said the world would have to get used to finding more objects like NT7 that, on discovery, look threatening, but then become harmless.

"This is because the problem of Near-Earth Objects is now being properly addressed," he said.


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Man is timid and apologetic; he is no longer upright; he dares not say "I think," "I am," but quotes some saint or sage. He is ashamed before the blade of grass or the blowing rose.Man postpones or remembers; he does not live in the present, but with reverted eye laments the past, or, heedless of the riches that surround him, stands on tiptoe to foresee the future. He cannot be happy and strong until he too lives with nature in the present, above time
TRANSCEND



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Offlinemushroomplume
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Registered: 10/16/06
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Re: Space rock on collision course [Re: Jack Albertson]
    #7694027 - 11/29/07 08:47 AM (16 years, 2 months ago)

This should make all those mayan end of the world nerds happy.


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InvisibleJack Albertson
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Registered: 04/14/06
Posts: 10,065
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Re: Space rock on collision course [Re: mushroomplume]
    #7694030 - 11/29/07 08:49 AM (16 years, 2 months ago)

How so, because something is predicted to happen after 2012?


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Man is timid and apologetic; he is no longer upright; he dares not say "I think," "I am," but quotes some saint or sage. He is ashamed before the blade of grass or the blowing rose.Man postpones or remembers; he does not live in the present, but with reverted eye laments the past, or, heedless of the riches that surround him, stands on tiptoe to foresee the future. He cannot be happy and strong until he too lives with nature in the present, above time
TRANSCEND



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Offlinemushroomplume
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Registered: 10/16/06
Posts: 1,395
Last seen: 14 years, 19 days
Re: Space rock on collision course [Re: Jack Albertson]
    #7694048 - 11/29/07 08:56 AM (16 years, 2 months ago)

No, because a lot of those people are eager to see the world end. You haven't noticed how excited some get talking about end of the world prophecies?


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InvisibleJack Albertson
bismillah rahmani rahim
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Registered: 04/14/06
Posts: 10,065
Loc: SOLARIS
Re: Space rock on collision course [Re: mushroomplume]
    #7694061 - 11/29/07 09:01 AM (16 years, 2 months ago)

ive come to my own conclusions about 2012. I doubt the world will end but it could be pretty bad. Why would you be eager for the world to end?


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Man is timid and apologetic; he is no longer upright; he dares not say "I think," "I am," but quotes some saint or sage. He is ashamed before the blade of grass or the blowing rose.Man postpones or remembers; he does not live in the present, but with reverted eye laments the past, or, heedless of the riches that surround him, stands on tiptoe to foresee the future. He cannot be happy and strong until he too lives with nature in the present, above time
TRANSCEND



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InvisibleIndividual
Bass Addict
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Registered: 12/20/06
Posts: 6,666
Loc: Reality Loophole
Re: Space rock on collision course [Re: Jack Albertson]
    #7694066 - 11/29/07 09:03 AM (16 years, 2 months ago)

Call the Willis!


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THE PHILOSOPHY OF LIBERTY <---                                               



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InvisibleJack Albertson
bismillah rahmani rahim
Male User Gallery


Registered: 04/14/06
Posts: 10,065
Loc: SOLARIS
Re: Space rock on collision course [Re: Individual]
    #7694067 - 11/29/07 09:03 AM (16 years, 2 months ago)

i happened to watch that the other day. Never noticed how good it was minus the aerosmith


--------------------
Man is timid and apologetic; he is no longer upright; he dares not say "I think," "I am," but quotes some saint or sage. He is ashamed before the blade of grass or the blowing rose.Man postpones or remembers; he does not live in the present, but with reverted eye laments the past, or, heedless of the riches that surround him, stands on tiptoe to foresee the future. He cannot be happy and strong until he too lives with nature in the present, above time
TRANSCEND



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