Chicxulub: asteroid or sungrazer comet?

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brian livesey
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Chicxulub: asteroid or sungrazer comet?

Post by brian livesey »

The impactor that crashed to Earth 66 million years ago, producing a crater 93 miles in diameter and 12 miles deep, is being regarded by Harvard researchers as a fragment of a long period sun grazing comet from the Oort Cloud.
Undergraduate student, Amira Siraj, said: “The solar system acts as a kind of pinball machine. Jupiter, the most massive of the planets, kicks long period comets into orbits that bring them close to the Sun,” These sungrazer comets undergo powerful gravitational tidal forces that stretches them and causes them to break apart. On their way back to the Oort Cloud, the resulting fragments can strike the Earth.
New calculations show an increase of a factor of 10 for long period comets that can affect the Earth and that about 20% of comets become sungrazers. Researchers say that their new rate of impact is consistent with the age of the Chicxulub event. Astrophysicist Avi Leob said: “ Our paper provides a basis for explaining the occurrence of this event.” “Nature’s Scientific Reports”.
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stella
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Re: Chicxulub: asteroid or sungrazer comet?

Post by stella »

It's "Avi Loeb", famous for his verbal attack on Jill Tartar.
brian livesey
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Re: Chicxulub: asteroid or sungrazer comet?

Post by brian livesey »

I’ll have to purchase a spellchecker. :wink:
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stella
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Re: Chicxulub: asteroid or sungrazer comet?

Post by stella »

...and "Jill Tartar" should be "Jill Tarter", but that's my error!
RMSteele
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Re: Chicxulub: asteroid or sungrazer comet?

Post by RMSteele »

Thanks Stella, you left me wondering if Loeb had switched careers to dentistry.
Regards, Bloeb
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