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'Spooky' asteroid to fly past Earth on Halloween


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#1 NickAu

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Posted 22 October 2015 - 08:28 PM

 

An asteroid the size of a football stadium will zoom past Earth on Halloween, in a close encounter that astronomers view as far more treat than trick.

The massive asteroid 2015 TB145 will come within 500,000 km of the planet — or about 1.3 times the distance from Earth to the moon — on the afternoon of Oct. 31, just three weeks after the space rock was discovered, according to NASA. There's no threat of an impact on this pass, NASA officials said.

Astronomers estimate the diameter of 2015 TB145, which is also known as "Spooky," to be between 290 to 650 meters. The Halloween flyby will mark the closest known encounter with such a big asteroid until August 2027, researchers said.

https://au.news.yahoo.com/a/29882293/creepy-and-kooky-big-spooky-asteroid-to-fly-past-earth-on-halloween/

 

 

I know several people who think this is the one that destroys life on earth and are preparing in bunkers, Personally I see no point in preparing anything because if this sucker were to hit us there is no bunker deep enough.


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#2 SuperSapien64

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Posted 23 October 2015 - 07:11 PM

With all the money spent on defense you think some that would towards trying to prevent a possible global catastrophe like that from happening.

But I guess it's more important to fight amongst ourselves then to work together for the greater good. :rolleyes:

Thanks for sharing NickAu. :)



#3 NickAu

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Posted 23 October 2015 - 07:22 PM

We are the only species in the history of the Earth that can do something like that if we want.


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#4 rp88

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Posted 29 October 2015 - 09:06 PM

290 to 650 metres would probably be catastrophic but not on the scale of the chicxulub asteroid responsivble for the extinction of the dinosaurs. That sort of thing could devastate a large fracton of a continent, but probably not kick up dust to the point where crops in other parts of the world could no longer grow, that said in out very interconnected modern world a disaster in one continent could lead to very bad consequences elsewhere very fast. There is ZERO chance of this asteroid hitting usany time soon, NASA's observations of it's trajectory are accurate enough to allow it's course to be predicted to within metres, things in space follow very precise mathematically defined paths, when something like an asteroid is predicted at a few days notice to go where ever it is going then it will be going on that predicted path to within a few metres accuracy. As a note, situations like this but where the asteroid's path rather than sailing harmlessly by are the sort for which any asteroid deflection measures would be too late, to deflect an asteroid by any of the main proposed means (white paint on one side to increase solar radiation pressure and delect it, mass drivers or rocket engines landed on it to thrust and deflect it, nuclear explosions set off near it to heat it (NOT within it to shatter it) and make it sputter off small chunks and deflect...) would require it to be known about many months in advance, and would require the necessary spacecraft to be already built long before then and waiting to be put into the payload shroud of a launch vehicle.
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#5 mjd420nova

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Posted 30 October 2015 - 10:31 PM

I think we are safe on this one.  It trajectory is outside the orbit of the moon.  At least 250,000 miles away.    NO SWEAT



#6 NickAu

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Posted 30 October 2015 - 10:36 PM

 

At least 250,000 miles away.

In galactic terms 250.000 miles is less than the thickness of the proverbial hair. But hey a miss is a miss.


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#7 violetrose

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Posted 30 October 2015 - 11:06 PM

So what if it goes off course and hits the moon? :halloween:



#8 NickAu

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Posted 30 October 2015 - 11:13 PM

And if its a space ship? Well I for one welcome our new overlords and offer my self an an advisor on humans in exchange for not being eaten.


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#9 rp88

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Posted 31 October 2015 - 05:09 PM

Post #7, physically impossible. Objects in space follow easily predicted trajectories acting under the influence of gravity and a tiny bit of solar radiation pressure. Both are well understood to the point that objects obeying the laws of celestial mechanics can have their future and past paths worked out, from just a quick radar measurement, to extraordinary accuracies. There is no plausible way in which asteroids can change cause from their predicted paths except in cases where humans launch missions specifically to divert asteroids, and such missions would only be able to make significant changes to the trajectory several months after the mission occured, they couldn't make any significant change over a period of days. Hence there is nothing that can stop this asteroid following the course predicted for it over the next few weeks, by which point it will be far from earth and not likely to come near us again for centuries.


Any asteroid of this size which was on course to hit the moon would do nothing more than add an extra crater to it's already heavily cratered surface. This would, if on the correct part of the moon to be seen from earth, lead to a short birhgt flash at the point of impacts which could be seen by astronomer's telescopes and maybe by amateurs with telscopes too. If this happened you could expect national space agencies to be panning missions to the impact site almost as soon as the impact had occured, because there might be interesting chemical traces left near the crater which would tell us what the exact composition of the asteroid was.

Edited by rp88, 31 October 2015 - 05:11 PM.

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#10 mjd420nova

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Posted 01 November 2015 - 12:08 PM

Sunday.  We're still here.  Must have missed.  The thing was moving at 78,000 miles per hour.  Not a whole lot can influence an object moving at that speed.






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