The Cosmic Microwave Background (CMB) is the cooled remnant of the first light that could ever travel freely throughout the Universe. This 'fossil' radiation, the furthest that any telescope can see, was released soon after the 'Big Bang'. Scientists consider it as an echo or 'shockwave' of the Big Bang..
Stationary Light
Light from a stationary source travels at 300,000 km/sec (186,000 miles/sec).
Moving Light
Light from a moving source also travels at 300,000 km/sec (186,000 miles/sec).
Say that Einstein's bike travels at 10% the speed of light (30,000 km/sec): the speed of light from Einstein's headlight does NOT equal 330,000 km/sec.
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The Andromeda Galaxy is a barred spiral galaxy and is the nearest major galaxy to the Milky Way. It was originally named the Andromeda Nebula and is cataloged as Messier 31, M31, and NGC 224.
Our Milky Way galaxy is destined to collide with our closest large neighbour, the Andromeda galaxy, in about five billion years. Scientists can predict what's going to happen. The merger will totally alter the night sky over Earth but will likely leave the solar system unharmed, according to NASA.
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Brian Edward Cox is an English physicist and former musician who is a professor of particle physics in the School of Physics and Astronomy at the University of Manchester[2][3] and The Royal Society Professor for Public Engagement in Science.[4] He is best known to the public as the presenter of science programmes, especially BBC Radio 4’s The Infinite Monkey Cage and the Wonders of... series[5][6] and for popular science books, such as Why Does E=mc²? and The Quantum Universe.
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