Chelyabinsk meteorite had previous collision or near miss

Space.com ^ | 26-Aug-2013 | Clara Moskowitz

[rjbemsha]

The Chelyabinsk meteorite either collided with another body in the solar system or came too close to the Sun before it fell to Earth, according to research announced today (Tuesday 27th August) at the Goldschmidt conference in Florence.

"...We hope to find out more once the main body of the meteorite is raised from Chebarkul Lake," [says Dr Sharygin].

Surprisingly, the IGM team also found small quantities of platinum group elements in the meteorite's fusion crust. The team are only able to identify these elements as an alloy of osmium, iridium and platinum, but its presence is unusual as the fusion crust is formed over too short a time period for these elements to easily accumulate.

[rjbemsha]

NASA video of dust plume formed by the Chelyabinsk object here http://www.astrobio.net/pressrelease/5629/around-the-world-in-4-days-the-chelyabinsk-meteors-plume

[Veggie Todd]

Isn’t collision and near miss the same thing?

[onedoug]

It had incorporated elements from earlier generations of stars as those referenced could not have been produced by the Sun.

Our innards have been about this general part of the galaxy for a long, long time.

[SampleMan]

Isn’t collision and near miss the same thing? No.

But what qualifies as "passed too close to the sun" when referencing an chunk of rock? Too close how? It could have hit the sun and still not bee too close. In what way was it too close?

[SunkenCiv]

Thanks rjbemsha.

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[stayathomemom]

Analogous to a double negative.

[BenLurkin]

[SunkenCiv]

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