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Hace 1 día · The cosmic microwave background (CMB or CMBR) is microwave radiation that fills all space in the observable universe.It is a remnant that provides an important source of data on the primordial universe. With a standard optical telescope, the background space between stars and galaxies is almost completely dark.However, a sufficiently sensitive radio telescope detects a faint background glow ...
Hace 1 día · All motion pictures made and exhibited before 1929 are indisputably in the public domain in the United States. This date will move forward one year, every year, meaning that films released in 1929 will enter the public domain in 2025, films from 1930 in 2026, and so on, concluding with films from 1977 entering the public domain in 2073.
