Which evidence supports the idea that Cosmic Microwave Background radiation is a remnant of the Big Bang?(1 point)
Responses
Its temperature is uniform.
Its temperature is uniform.
Its temperature fluctuates greatly.
Its temperature fluctuates greatly.
Its mass is uniform.
Its mass is uniform.
Its mass fluctuates greatly.
The Cosmic Microwave Background (CMB) radiation is considered a remnant of the Big Bang primarily because its temperature is quite uniform across the entire sky when measured with great precision. The uniformity of the CMB's temperature—one of the key predictions of the Big Bang theory—indicates that the radiation originated from an early, hot, dense state of the universe when matter and energy were evenly distributed.
However, this uniform temperature has slight fluctuations (on the order of one part in 100,000), which are critical for understanding the structure of the universe. These tiny fluctuations in temperature and density are believed to have given rise to the large-scale structures we see in the universe today, such as galaxies and clusters of galaxies. The Big Bang model predicts these fluctuations, and their existence has been confirmed by observations from satellites such as NASA's COBE, WMAP, and ESA's Planck.
Thus, the correct response that supports the idea that the CMB radiation is a remnant of the Big Bang is:
"Its temperature is uniform."