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Ancient Earth hammered by double space impact

asteroids binary asteroids meteorites impacts craters

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#1    Waspie_Dwarf

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Posted 18 March 2014 - 11:10 PM

Ancient Earth hammered by double space impact


www.bbc.co.uk said:

We've all seen the films where an asteroid hurtles towards our planet, threatening civilisation.

What's less well known is that menacing space rocks sometimes come in twos.

Researchers have outlined some of the best evidence yet for a double space impact, where an asteroid and its moon apparently struck Earth in tandem.

Using tiny, plankton-like fossils, they established that neighbouring craters in Sweden are the same age - 458 million years old.

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#2    :PsYKoTiC:BeHAvIoR:

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Posted 21 March 2014 - 01:01 PM

The researchers make it sound like the idea of a simultaneous asteroids impacting a planet or a moon is some kind of mind blowing concept. They were clearly looking for the evidence. It's not as if they stumbled on a site and said "Whoa!".

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#3    aquatus1

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Posted 21 March 2014 - 02:17 PM

It is interesting and unusual though.  How often do you hear about an asteroid with a moon, let alone both of the hitting the Earth?


#4    Waspie_Dwarf

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Posted 21 March 2014 - 03:11 PM

View Postaquatus1, on 21 March 2014 - 02:17 PM, said:

It is interesting and unusual though.  How often do you hear about an asteroid with a moon, let alone both of the hitting the Earth?
It's not as unusual as you might think. It's estimated that 10% of asteroids have moons.

"Space is big. Really big. You just won't believe how vastly, hugely, mind-boggingly big it is. I mean, you may think it's a long way down the street to the chemist, but that's just peanuts to space." - The Hitch-Hikers Guide to the Galaxy - Douglas Adams 1952 - 2001

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#5    aquatus1

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Posted 21 March 2014 - 10:46 PM

And I learned something new!


#6    Frank Merton

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Posted 22 March 2014 - 10:58 AM

This all took place quite awhile ago.


#7    aquatus1

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Posted 22 March 2014 - 12:37 PM

One...would imagine.






Also tagged with asteroids, binary asteroids, meteorites, impacts, craters

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