NOVA scienceNOW | The Dark Matter Mystery | PBS


http://... We can't see dark matter, and some skeptics doubt its existence, but many scientists think it makes up 20-some percent of our universe. Astronomer Doug Clowe explains how the Bullet Cluster, a group of galaxies billions of light years away, may shed some light on this mysterious stuff.Don't miss the new season of NOVA scienceNOW, airing every Wednesday at 9pm starting June 25 on PBS. Watch past episodes of the program, try out interactives, and more on our Web site: http://...







Channel: Tech
Uploaded: June 23, 2008 at 10:01 pm
Author: PBS

Length: 00:04:38
Rating: 4.41
Views: 58972

Tags: Science cosmic Doug astrophysic matter Clowe Bullet galaxy astronomy NOVA dark Cluster PBS

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Video Comments:
Bizzer10 (December 1, 2008 at 7:02 pm)
couldnt this be small planets of machos?
Bizzer10 (December 1, 2008 at 6:53 pm)
what allows "normal" matter to interact with light?

that should be the first question asked,

then we should compare these findings with other particles that dont enteract with light to determine what properties cause this and then consider that this porperty is not inate but dependent on something undiscovered

well, i guess
RJL738 (November 29, 2008 at 5:02 pm)
Actually dark matter makes up more than 90% of the universe.Theories rang from an extra partical to an interacting dimentional brane, or even an extra part of the universe almost like what the Oort cloud is to the solar system.

Part of the reason galaxies hold together is because of a halo of dark matter.
girlmelissa (November 25, 2008 at 2:51 am)
i think that dark or light matter is hard to see if you are one or the other , and there are frequency,s of matter. how can we in our frequency ever find something that is not/

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