Sound Waves from the Beginning of Time
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With the subject heading: Negative Mass Challenge Question
Invisible to the naked eye, our night sky is scattered with the 100s of billions of galaxies the fill the known universe. Like the stars, these galaxies form constellations – hidden patterns that echo the reverberations of matter and light in an epoch long before galaxies ever formed. These are the baryon acoustic oscillations, and they may hold the key to understanding the nature of dark energy.
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Previous Episode: Why String Theory Is Wrong
https://youtu.be/IhpGdumLRqs
Hosted by Matt O'Dowd
Written by Matt O'Dowd
Graphics by Luke Maroldi
Directing by Andrew Kornhaber
The field of cosmology – the study of the universe on its largest scales – was once the least precise in all of astrophysics. The impossibly vast distances made accurate measurements near impossible. But as our telescopes and our techniques improved over the past few decades, things are now different. We live in the era of precision cosmology, in which we know to stunning detail the properties that govern the very birth, evolution, and end of our universe. We talked about one of those properties in a recent episode – the Hubble constant – and about a growing conflict in its measured value which hints at strange new physics. Today we’ll talk about another measurement that may help resolve this crisis: the baryon acoustic oscillations. They the fossils of the first sound waves in the universe, imprinted in the distribution of galaxies on the sky. And in these patterns we can read the expansion history of the universe.
Special thanks to our Patreon Big Bang, Quasar and Hypernova Supporters:
Big Bang:
Anton Lifshits
coolascats
David Nicklas
Fabrice Eap
Juan Benet
Justin Lloyd
Tim Davis
Quasar:
James Flowers
Mark Rosenthal
Tambe Barsbay
Vinnie Falco
Hypernova:
chuck zegar
Danton Spivey
Donal Botkin
Edmund Fokschaner
Jens Theisen
John Hofmann
Jordan Young
Joseph Salomone
kkm
Mark Heising
Matthew O'Connor
Thanks to our Patreon Gamma Ray Burst Supporters:
Alexey Eromenko
Antonio Ruiz
Bradley Jenkins
Brandon Labonte
Buruk Aregawi
Carlo Mogavero
Daniel Lyons
David Behtala
David Crane
David Schmidt
Dustan Jones
Geoffrey Short
Greg Weiss
Jack Frosch
James Hughes
James Quintero
Jinal Doshi
JJ Bagnell
John Webber
Jon Folks
Jonah
Joseph Emison
Josh Thomas
Kenneth F Leonard
Kevin Warne
Kyle Hofer
Malte Ubl
Mark Vasile
Nathan Hitchings
Nicholas Rose
Nick Virtue
Ratfeast
Richard Broman
Scott Gossett
Sigurd Ruud Frivik
Tim Crookham
Tim Stephani
Tommy Mogensen
سلطان الخليفي
Видео Sound Waves from the Beginning of Time канала PBS Space Time
↓ More info below ↓
You can check out Google's Science Journal app at http://g.co/ScienceJournal
Check out the new Space Time Merch Store!
https://pbsspacetime.com/
Support Space Time on Patreon
https://www.patreon.com/pbsspacetime
Email your answers to: pbsspacetime@gmail.com
With the subject heading: Negative Mass Challenge Question
Invisible to the naked eye, our night sky is scattered with the 100s of billions of galaxies the fill the known universe. Like the stars, these galaxies form constellations – hidden patterns that echo the reverberations of matter and light in an epoch long before galaxies ever formed. These are the baryon acoustic oscillations, and they may hold the key to understanding the nature of dark energy.
Tweet at us! @pbsspacetime
Facebook: facebook.com/pbsspacetime
Email us! pbsspacetime [at] gmail [dot] com
Comment on Reddit: http://www.reddit.com/r/pbsspacetime
Help translate our videos!
https://www.youtube.com/timedtext_cs
Previous Episode: Why String Theory Is Wrong
https://youtu.be/IhpGdumLRqs
Hosted by Matt O'Dowd
Written by Matt O'Dowd
Graphics by Luke Maroldi
Directing by Andrew Kornhaber
The field of cosmology – the study of the universe on its largest scales – was once the least precise in all of astrophysics. The impossibly vast distances made accurate measurements near impossible. But as our telescopes and our techniques improved over the past few decades, things are now different. We live in the era of precision cosmology, in which we know to stunning detail the properties that govern the very birth, evolution, and end of our universe. We talked about one of those properties in a recent episode – the Hubble constant – and about a growing conflict in its measured value which hints at strange new physics. Today we’ll talk about another measurement that may help resolve this crisis: the baryon acoustic oscillations. They the fossils of the first sound waves in the universe, imprinted in the distribution of galaxies on the sky. And in these patterns we can read the expansion history of the universe.
Special thanks to our Patreon Big Bang, Quasar and Hypernova Supporters:
Big Bang:
Anton Lifshits
coolascats
David Nicklas
Fabrice Eap
Juan Benet
Justin Lloyd
Tim Davis
Quasar:
James Flowers
Mark Rosenthal
Tambe Barsbay
Vinnie Falco
Hypernova:
chuck zegar
Danton Spivey
Donal Botkin
Edmund Fokschaner
Jens Theisen
John Hofmann
Jordan Young
Joseph Salomone
kkm
Mark Heising
Matthew O'Connor
Thanks to our Patreon Gamma Ray Burst Supporters:
Alexey Eromenko
Antonio Ruiz
Bradley Jenkins
Brandon Labonte
Buruk Aregawi
Carlo Mogavero
Daniel Lyons
David Behtala
David Crane
David Schmidt
Dustan Jones
Geoffrey Short
Greg Weiss
Jack Frosch
James Hughes
James Quintero
Jinal Doshi
JJ Bagnell
John Webber
Jon Folks
Jonah
Joseph Emison
Josh Thomas
Kenneth F Leonard
Kevin Warne
Kyle Hofer
Malte Ubl
Mark Vasile
Nathan Hitchings
Nicholas Rose
Nick Virtue
Ratfeast
Richard Broman
Scott Gossett
Sigurd Ruud Frivik
Tim Crookham
Tim Stephani
Tommy Mogensen
سلطان الخليفي
Видео Sound Waves from the Beginning of Time канала PBS Space Time
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