So cautiously and with reservations were first expressed suspicion about the expansion of the nebula in the world. There were no firm conviction that the nebula - a star system - the galaxy similar to our own galaxy - the Milky Way. A few more years and another American astrophysicist E. Hubble proved that nebulae are composed of stars, and measure the distance to them. It turned out that these distances are enormous, and nebulae - it is a huge star of the galaxy. The next great discovery that made E. Hubble - is the law under which fly galaxy. Comparing the rate of their divergence from their distance from us, E. Hubble in 1929 found that they - the removal rate - are directly proportional to the distance. This was the great law that bears his name. Of course, the galaxies are moving away not only from us, from our galaxy, but also from each other - there is a general expansion of the universe.
Out of Left Field: Social Inequality and Sports
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