Astronomy

Dark Flow | Space Time

Viewers like you help make PBS (Thank you ?) . Support your local PBS Member Station here: https://to.pbs.org/DonateSPACE

Why does the universe seem to be moving in one particular direction?

You can further support us on Patreon at https://www.patreon.com/pbsspacetime
Get your own Space Time t­shirt at http://bit.ly/1QlzoBi
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:
The Secrets of Feynman Diagrams

Space is not static. Everything moves. Planets orbit stars, stars orbit within galaxies, galaxies whirl within the gravitational fields of giant clusters. And of course, the universe is expanding; distant galaxies are thrust apart from each other as the space between them grows. But there’s no preferred direction to any of this motion. Motion due to the expansion of the universe – what we call the Hubble flow – is equal in all directions. The random motion of galaxies – what we call their peculiar motion – should also have no preferred direction. On the largest scales of the universe, there should be no preference for up or down or left or right. At least that’s what we thought. Observations of the cosmic microwave background suggest that the galaxy clusters across the cosmos may be moving, ever so slightly, towards the same point beyond the cosmic horizon. We call this dark flow.

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)

Comments answer by Matt:

VacuumDiagrams

Samuel Benda

JoJoModding

Squid Master

Special thanks to our Patreon Big Bang, Quasar and Hypernova Supporters:

Big Bang
CoolAsCats
David Nicklas
Eugene Lawson

Quasar
Tambe Barsbay
Max Levine
Mayank M. Mehrota
Mars Yentur
Josh
Mark Rosenthal
Dean Fuqua

Hypernova
Chuck Zegar
Jordan Young
Ratfeast
John Hofmann
Joseph Salomone
Martha Hunt
Craig Peterson
Science Via Markets
Barry Hatfield

Thanks to our Patreon Gamma Ray Burst Supporters:
Peter Durocher
Michael Kers
Chris Hicks
Mark Vasile
Patrick Murray
Sultan Alkhulaifi
Alex Seto
Conor Dillon
Jared Moore
Michal-Peanut Karmi
Bernardo Higuera
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

Products You May Like

Articles You May Like

Evolution of Display Technology [1940 – 2020]
The FTX Disaster is Deeper Than you Think
34 Historical Fashion Facts – mental_floss List Show Ep. 513
Calculate the shaded area
25 Halloween Life Hacks – mental_floss List Show Ep. 443

Leave a Reply

Your email address will not be published. Required fields are marked *