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Neutron stars collision 130 million year ago

16-10-2017 7:45pm

#1

Rubecula

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http://www.bbc.co.uk/news/av/science-environment-41641724/neutron-stars-sound-of-collision-recorded-for-first-time

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#2 16-10-2017 7:53pm

Fathom

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#3 17-10-2017 7:07am

Capt'n Midnight

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As an aside, when our planet was young it was molten so most of the heavy metals sank towards the centre.

Most of the platinum group metals we have today came from asteroids that arrived after the planetary crust formed.

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#4 17-10-2017 3:03pm

Fathom

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Neutron star collisions a source of heavy elements such as gold and platinum.

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#5 19-10-2017 4:22am

Rubecula

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Capt'n Midnight wrote: »

As an aside, when our planet was young it was molten so most of the heavy metals sank towards the centre.

Most of the platinum group metals we have today came from asteroids that arrived after the planetary crust formed.

certainly some have arrived that way but not most. most have risen from deep inside the earth on thermal circulatory currents, and these have sometimes been ejected by volcanic action.

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