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Author Topic: Earth's Velocity in Space  (Read 1927 times)

Offline jeremiyah

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Earth's Velocity in Space
« on: 23/03/2009 07:57:45 »


How can you measure the Earth's Velocity in Space?


 

Offline Madidus_Scientia

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Earth's Velocity in Space
« Reply #1 on: 23/03/2009 08:15:17 »
Relative to what?
 

Offline Vern

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Earth's Velocity in Space
« Reply #2 on: 23/03/2009 11:37:32 »
We can determine the direction of movement of the Cosmic Microwave Background Radiation (CMBR) relative to the Milky Way Galaxy and see that we are moving about 500 miles per second toward an area we have called "the great attractor". We make this measurement by carefully determining the apparent wavelength of the CMBR when it is viewed from different directions. We notice that in one direction this wavelength is slightly longer than in the opposite direction in space. We assume that the differences in wavelength are caused by the Doppler effect.

Some people suspect that the reference frame of the CMBR might be the same everywhere in the universe.
« Last Edit: 23/03/2009 11:42:35 by Vern »
 

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Earth's Velocity in Space
« Reply #2 on: 23/03/2009 11:37:32 »

 

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