Illustration of the two methods used to measure the expansion of the Universe (IMAGE)

University of Copenhagen - Faculty of Science

Illustration of the two methods used to measure the expansion of the Universe

Caption

The left hemisphere shows the expanding remnant of the supernova discovered by Tycho Brahe in 1572, here observeret in X-rays (credit: NASA/CXC/Rutgers/J.Warren & J.Hughes et al.). On the right is a map of the cosmic background radiation from one half of the sky, observed in microwaves

Credit

NASA/WMAP Science Team

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