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Dark Matter with Professor Marusa
Bradac
New
UCD Professor
Marusa Bradac discusses her favorite California pastimes - surfing,
skiing, diving, and oh yes, discovering the secrets of Dark Matter.
Click here for Broadcast
After you have enjoyed the
broadcast,
learn more about Dark
Matter.
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Image
#1
Image
#1 shows the Bullet Cluster - the aftermath of a collision of two
galaxy clusters. Each cluster contains many galaxies (seen in white and
yellow) and has a total mass of 1000 trillion times larger than our
Sun. The collision occurred 150 million years ago at a speed of 10
million mph. The galaxies passed through one another with almost no
interaction because there is so much space between their stars. The red
clouds are hot ionized gases that did interact strongly and were slowed
down by the collision. The blue areas are the computed locations of
dark matter, determined by the amount that they bend light from more
distant galaxies. The dark matter "haloes" show that during the
collision they didn't interact with the galaxies, the hot ionized
gases, or even the other dark matter halo. This image shows that dark
matter seems to interact only through gravity.
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Image #2
Favorite
pastime of Probessor Bradac |
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Image
#3
Another
favorite pastime of Probessor Bradac |
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