Mapping the Milky Way 3D Image of the Galaxy

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It has spawned a host of songs from crooners to alternative rock bands. One of the best loved chocolate bars in the United Kingdom is named after it. Yet how much to we really know about the Milky Way and just how important is it? • We could be close to many answers about the galaxy thanks to a new satellite named Gaia, being launched by the European Space Agency. • One fundamental step to understand our universe is to understand our closer universe, which is the galaxy, explained Guiseppe Sarri who is the project manager of ESA's Gaia project. • Gaia will scan the sky with powerful new eyes, mapping the Milky Way in unprecedented detail. It will help produce a detailed 3D image of the galaxy, something which has never been done before. • The project has excited astronomers, as the satellite promises a revolution. It will observe, map and measure a grand total of one billion stars. • To do that ESA's satellite will carry the largest digital camera flown into space. As Guiseppe Sarri pointed out: We are talking about stars which are 400,000 times fainter than we can see with naked eyes. • Gaia's galactic census should help astronomers solve some of the biggest puzzles in the field. Those include establishing the exact spiral shape of our galaxy, and tracking dark matter, the hidden force that shapes our universe. • • euronews knowledge brings you a fresh mix of the world's most interesting know-hows, directly from space and sci-tech experts. • Subscribe for your dose of space and sci-tech (every Monday, Wednesday and Friday): http://www.youtube.com/subscription_c... • Made by euronews, the most watched news channel in Europe

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