The Missing Mass Mystery
October 25, 2017
883,130
18,552
1,781
2.30%
Search the Record
IndexedEvery word spoken in this episode is indexed. Type any phrase to jump straight to the moment it was said.
Type any word or phrase that may have been spoken. Click a result to seek the player to that exact moment.
Try a name, a topic, or a quoted line
Pbs Space Time Episodes Around October 25, 2017
See what was published immediately before and after this episode.
13:23Now PlayingThe Missing Mass Mystery
YouTube Description
as posted by the channelViewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here
For years, astronomers have been unable to find up to half of the baryonic matter in the universe. We may just have solved this problem.
You can further support us on Patreon at
Get your own Space Time tshirt at
Tweet at us! @pbsspacetime
Facebook: facebook.com/pbsspacetime
Email us! pbsspacetime [at] gmail [dot] com
Comment on Reddit
Help translate our videos!
Previous Episode:
The Nature of Nothing | Space Time
Dark Matter!
Dark Energy Playlist
We’ve known for some time that around 95% of the energy content of the universe is in dark matter and dark energy. This dark sector doesn’t interact with light in any way and so is invisible to us. The remaining 5% - the light sector – represents all of the regular matter in the universe. Yet what if I told you that all of the stars and galaxies and galaxy clusters only comprise 10% of the light sector. The rest has proved as elusive as the dark sector. We think it must exist as extremely diffuse gas in between the galaxies, yet our intense searches miss up to half of it. At least until now.
Resources
Graaff et al. 2017, "Missing Baryons in the Cosmic Web Revealed by the Sunyaev-Zel'dovich Effect"
Tanimura et al. 2017, "A Search for Warm/Hot Gas Filaments Between Pairs of SDSS Luminous Red Galaxies"
Written and Hosted by Matt O'Dowd
Produced by Rusty Ward
Graphics by Kurt Ross
Assistant Editing and Sound Design by Mike Petrow
Made by Kornhaber Brown (www.kornhaberbrown.com)
Special thanks to our Patreon Big Bang, Quasar and Hypernova Supporters:
Big Bang
BITISM
CoolAsCats
David Nicklas
Richard Senegor
Quasar
Tambe Barsbay
Mayank M. Mehrota
Mars Yentur
Mark Rosenthal
Dean Fuqua
Y2
Justin Lloyd
Hypernova
Edmund Fokschaner
Max Levine
Matthew O’Connor
Eugene Lawson
Barry Hatfield
Martha Hunt
Joseph Salomone
Chuck Zegar
Craig Peterson
Jordan Young
Ratfeast
John Hofmann
Thanks to our Patreon Gamma Ray Burst Supporters:
Denys Ivanov
Nick Virtue
Alexey Eromenko
Nicholas Rose
Scott Gossett
Mark Dykstra
Peter Durocher
Michael Kers
Chris Hicks
Mark Vasile
Patrick Murray
Sultan Alkhulaifi
Alex Seto
Michal-Peanut Karmi
Erik Stein
Daniel Lyons
Kevin Warne
JJ Bagnell
J Rejc
Amy Jie
Avi Goldfinger
John Pettit
Shannan Catalano
Florian Stinglmayr
Yubo Du
Benoit Pagé-Guitard
Nathan Leniz
Jessica Fraley
Loro Lukic
Brandon Labonte
David Crane
Greg Weiss
Guests & Subjects Covered
Sentinel Indexing in Progress
Metadata and chapters are available. Claim extraction for this episode is pending.
All video content is delivered via YouTube embedded players in accordance with the YouTube Terms of Service. Sentinel provides research tools that promote discovery and accountability across political media.