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Craig Hogan, "The Unlikely Primeval Sky" (American Scientist, November-December)

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Manage episode 519174374 series 2472510
Content provided by New Books Network and New Books. All podcast content including episodes, graphics, and podcast descriptions are uploaded and provided directly by New Books Network and New Books or their podcast platform partner. If you believe someone is using your copyrighted work without your permission, you can follow the process outlined here https://podcastplayer.com/legal.

Of all the patterns that could possibly be preserved in the post–Big Bang radiation, the one we see is surprisingly smooth on large angular scales.

Sitting by a campfire on a dark night, looking up at the Milky Way, a curious child asks, “What does the sky tell us? Where does it all come from? Does space go on forever?” A caring adult might share a little awe and humility about humanity’s place in the grand scheme or perhaps relate a traditional creation story. A scientist like me, who came of age soon after the discovery that the sky is not actually dark but awash in primeval radiation, might instead relate the still-unfinished scientific story of the boundaries and origins of time and space. That tale is displayed in nature’s own record of the structure of the early universe, a mosaic of temperature and density fluctuations preserved in the primordial light that astronomers call the cosmic microwave background (CMB).

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6118 episodes

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iconShare
 
Manage episode 519174374 series 2472510
Content provided by New Books Network and New Books. All podcast content including episodes, graphics, and podcast descriptions are uploaded and provided directly by New Books Network and New Books or their podcast platform partner. If you believe someone is using your copyrighted work without your permission, you can follow the process outlined here https://podcastplayer.com/legal.

Of all the patterns that could possibly be preserved in the post–Big Bang radiation, the one we see is surprisingly smooth on large angular scales.

Sitting by a campfire on a dark night, looking up at the Milky Way, a curious child asks, “What does the sky tell us? Where does it all come from? Does space go on forever?” A caring adult might share a little awe and humility about humanity’s place in the grand scheme or perhaps relate a traditional creation story. A scientist like me, who came of age soon after the discovery that the sky is not actually dark but awash in primeval radiation, might instead relate the still-unfinished scientific story of the boundaries and origins of time and space. That tale is displayed in nature’s own record of the structure of the early universe, a mosaic of temperature and density fluctuations preserved in the primordial light that astronomers call the cosmic microwave background (CMB).

Learn more about your ad choices. Visit megaphone.fm/adchoices

Support our show by becoming a premium member! https://newbooksnetwork.supportingcast.fm/new-books-network

  continue reading

6118 episodes

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