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Essay

DARK MATTER - WHAT IS IT?

Essay specific features

 

Issue:

Science

 

Written by:

Janis M

 

Date added:

September 8, 2012

 

Level:

 

Grade:

B

 

No of pages / words:

8 / 1995

 

Was viewed:

5374 times

 

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Essay content:

That it exists is one of the few things on which researchers have been certain. What is it, really? How do we know that it's there? How do we ?°see?± it if it's ?°dark?±? Some scientists think dark matter is in the form of massive objects, such as black holes, that hang out around galaxies unseen...
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Other scientists believe dark matter to be subatomic particles that rarely interact with ordinary matter. In 1933, the astronomer Fritz Zwicky while studying the motions of distant galaxies in the Coma cluster estimated the total mass of a group of galaxies by measuring their brightness. When he used a different method to compute the mass of the same cluster of galaxies, he came up with a number that was 400 times his original estimate (13)...
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General issues of this essay:
Massive Retaliation Massive "More light and light, more dark and dark our woes". Dark Matter Dark Matter Is Dark Ages Dark? A Massive Project For The Benefit Of Mankind: A Look At The Human Geno DARK MATTER - WHAT IS IT? Dark Matter Dark Matter Matter lab Matter Matter Matter Does It Matter?
 

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