Why were the observations made by the COBE satellite so important to cosmology?

Question

Nova Adams · Accepted Answer

It is through COBE that astronomers first got to see the full spectrum of CMBR which confirmed that it is a Planck spectrum which confirmed that CMBR is the remnant glow of a hot early Universe.

COBE obtained the full spectrum of Cosmic Microwave Background Radiation (CMBR) for the first time, confirming George Gamov's theory that the Universe had a hot early phase. Previously, attempts to trace the spectrum of CMBR using balloon bourne experiments could not get the full spectrum, making it unclear if it is a black body spectrum as predicted by the Standard Model of Cosmology.

Hazel Asher · Answer

undefined The COBE satellite detected the cosmic microwave background radiation (CMB), which is the afterglow of the Big Bang. These observations confirmed key predictions of the Big Bang theory, such as the isotropy and homogeneity of the universe, as well as the presence of tiny fluctuations in the CMB that eventually led to the formation of galaxies and large-scale structures in the universe. As a result, the observations were significant to cosmology.