>>19174321CBR Proves Earth's Motion Through Space
The ability to measure the cosmic background radiation (CBR) gives us something the physicists of the early/mid 20th century could only dream of: a universal frame of reference by which to establish if Earth is really moving linearly or if it just appears to be. The CBR permeates all of space. If an object is at rest relative to the CBR then the frequencies observed will be the same in all directions. If an object is moving relative to the CBR, then Doppler shift will reveal in what direction and how fast.
We measured this phenomenon and established Earth's linear motion through space using the COBE satellite in operation from 1989 to 1993. What did we find? That the Earth is definitely moving through the cosmos.
https://www.scientificamerican.com/article/how-fast-is-the-earth-mov/>In 1989, the COBE satellite was placed in orbit about the earth (again, the earth is the frame of reference!) to measure the long-diluted radiation echo of the birth of our universe. This radiation, which remains from the immensely hot and dense primordial fireball that was our early universe, is known as the cosmic microwave background radiation (CBR). The CBR presently pervades all of space. It is the equivalent of the entire universe "glowing with heat.">One of COBE's discoveries was that the earth was moving with respect to this CBR with a well-defined speed and direction. Because the CBR permeates all space, we can finally answer the original question fully, using the CBR as the frame of reference.>The earth is moving with respect to the CBR at a speed of 390 kilometers per second. We can also specify the direction relative to the CBR. It is more fun, though, to look up into the night sky and find the constellation known as Leo (the Lion). The earth is moving toward Leo at the dizzying speed of 390 kilometers per second.