Skip to comments.Astronomy Picture of the Day -- CMB Dipole: Speeding Through the Universe
Posted on 06/15/2014 3:20:44 AM PDT by SunkenCiv
Explanation: Our Earth is not at rest. The Earth moves around the Sun. The Sun orbits the center of the Milky Way Galaxy. The Milky Way Galaxy orbits in the Local Group of Galaxies. The Local Group falls toward the Virgo Cluster of Galaxies. But these speeds are less than the speed that all of these objects together move relative to the cosmic microwave background radiation (CMBR). In the above all-sky map from the COBE satellite, radiation in the Earth's direction of motion appears blueshifted and hence hotter, while radiation on the opposite side of the sky is redshifted and colder. The map indicates that the Local Group moves at about 600 kilometers per second relative to this primordial radiation. This high speed was initially unexpected and its magnitude is still unexplained. Why are we moving so fast? What is out there?
(Excerpt) Read more at 220.127.116.11 ...
[Credit: DMR, COBE, NASA, Four-Year Sky Map]
of COURSE that's sarcasm.
Looks like “SUPER-FUN-BALL” in its “compressed, gathering energy” phase.
It truly is amazing what God has created, and we struggle to understand His mechanics and His universe. It is a noble quest, as long as we remain mindful of the Creator.
That would be very interesting concerning expansion, acceleration of expansion and dark energy.
I’ve always wondered what effect(if any) our Solar System’s orbit around the center of our galaxy has on our planet, regarding ‘space weather’. I’m sure our Solar System has to move through some interesting areas within our Galaxy, and I don’t believe humans have been around for an entire ‘galactic year’, so no one really knows.
I’ve wondered for quite some time what the cumulative average vector a person standing on this rock has when you take all the motions into account. From what I understand, it’s considerable. Of course, you have to have a frame of reference, so whatever number you might come up with is not without some degree of doubt/imprecision.
Has anyone figured out how long our galactic year is?
What a cute dipole you have.
Yin - Yang is a good analogy.
I see a pigeon staring hungrily at a snail. Run Gary!
around 250 million years. amazing.
Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.