It is worth seeing!
NASA experts recently released the stunning image, taken by space telescope “Hubble” (Hubble Space Telescope). The lens of his camera (Hubble”s Wide Field Camera 3) was directed toward the center of our galaxy, the milky way. This centre is located 26 thousand light years from Earth.
According to scientists, as if they opened the treasure chest. In the frame were shining a scattering of white, yellow, red and blue stars — young, old, infants, giants and dwarfs. Among them, the astronomers have counted more than 10,000 stars similar to our Sun.
The NASA illustrates well the paradox of Olbers (Olbers “paradox) or photometric paradox, which has puzzled astronomers for more than 200 years. Heinrich Wilhelm Olbers in the early 19th century was expressed by the then surprise. And formulated the essence of the paradox named after him: why is the night sky black? Why it doesn’t light up the world with countless stars? After all, the night sky ought to look like a shiny dome, next sprinkled with lights of stars, merging into a single glow. It should be clear as day. But somehow dark.
Over time, of course, all turned out. Stars do so much that each point on the sky contains some of them. But most are so far away that the light from them is simply lost on the way. Including from red shift, and cosmic dust clouds. As a result, instead of “lantern” in the sky appears a dark spot.
But take a look at the sky to the naked eye, as advised by the lecturer with the “Carnival night”, visible stars are getting bigger. And in the picture, taken thanks to the incredibly powerful space telescope “Hubble”, they almost merge into a shining dome. As believed by the astronomers of the last century.
In the early 90-ies of the last century in the astronomical environment, the conventional wisdom that we are surrounded by 200 billion galaxies. But recently British scientists from Nottingham University, under the direction of Christopher Conselice, showed that the Universe at least 10 times more galaxies than was considered.
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Consoles colleagues turned to the most recent and “deep” pictures taken with the “Hubble”, which was a computer model, synthesizing 3-D images. And found a “galactic shortage”. Namely, that the density of galaxies more than it seems — that is, per unit volume. If you believe Conselice, the observable universe has at least 2 of trillions of galaxies.
