Milky Way's cannibalistic past illuminated by ancient star's life story

rod

Oct 22, 2019
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A planet-hunting telescope recently made a new discovery about the Milky Way's past cannibalism.

Milky Way's cannibalistic past illuminated by ancient star's life story : Read more
"The resulting analysis suggested that v Indi was born in the Milky Way's halo (or gassy fringe), and that it was "kinematically heated" by the Gaia-Enceladus collision. The age of the star also implies that the galactic merger would have begun roughly between 11.6 billion and 13.2 billion years ago."

Fits well with Spitzer finds on cosmic high noon. Star formation rates in the Big Bang model are winding down now, not up like globular clusters, main sequence turn-off points, burning down.

"Combined with multiwavelength data from other instruments, these results show that star formation across the universe peaked between 2.3 and 3.8 billion years after the Big Bang and has been decreasing ever since. Astronomers refer to this period of rampant starbirth as cosmic high noon."

Spitzer's Legacy, Sky & Telescope 139(1):18-25, 2020, January 2020 issue.

The Earth was not there according to the Big Bang model during cosmic high noon. Today we orbit a very stable Sun and very habitable Earth.
 

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