The map charts a broad expanse of the universe, from the Milky Way to 'the edge of what can be seen.' A new map of the universe displays the span of the entire known cosmos for the first time with pinpoint accuracy and sweeping beauty. Compiled from data mined over two decades by the Sloan Dig
, the map was created by astronomers from Johns Hopkins University. It allows the public to experience data previously only accessible to scientists.depicts the actual position and real colors of 200,000 galaxies. It is available online, where it can also be downloaded for free.
“Growing up I was very inspired by astronomy pictures, stars, nebulae, and galaxies, and now it’s our time to create a new type of picture to inspire people,” says map creator Brice Ménard, a professor at Johns Hopkins. “Astrophysicists around the world have been analyzing this data for years, leading to thousands of scientific papers and discoveries. But nobody took the time to create a map that is beautiful, scientifically accurate, and accessible to people who are not scientists.
The map visualizes a slice of the universe, or about 200,000 galaxies—each dot on the map is a galaxy and each galaxy contains billions of stars and planets. The Milky Way is simply one of these dots, the one at the very bottom of the map. Ménard assembled the map with the help of former Johns Hopkins computer science student Nikita Shtarkman.
The map is even more colorful due to the expansion of the universe. Because of this, the farther an object is, the redder it appears. The first flash of radiation emitted soon after the“In this map, we are just a speck at the very bottom, just one pixel. And when I say we, I mean our galaxy, the Milky Way which has billions of stars and planets,” Ménard says. “We are used to seeing astronomical pictures showing one galaxy here, one galaxy there or perhaps a group of galaxies.
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