Microsoft’s AI for Good initiative empowers people around the world working to solve humanitarian issues and create a more sustainable and accessible world. Learn how SilviaTerra is empowering conservationists, government organizations and land owners to inventory forests for ecological social and economic health using AI.
Launched in December 2013, ESA’s Gaia satellite has been scanning the sky to perform the most precise stellar census of our Milky Way galaxy, observing more than one billion stars and measuring their positions, distances and motions to unprecedented accuracy.
The second Gaia data release, published in April, has provided scientists with extraordinary data to investigate the formation and evolution of stars in the Galaxy and beyond, giving rise to hundreds of scientific studies that are revolutionising our view of the cosmos.
Credits: ESA / CNES / Arianespace; ESA / Gaia / DPAC; Gaia Sky / S. Jordan / T. Sagristà; Koppelman, Villalobos and Helmi; Marchetti et al. 2018; NASA / ESA / Hubble; ESO, M. Kornmesser, L. Calçada
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The second data release of ESA’s Gaia mission has produced an extraordinary catalogue of over one and a half billion stars in our galaxy. Based on observations between July 2014 to May 2016, it includes the most accurate information yet on the positions, brightness, distance, motion, colour and temperature of stars in the Milky Way as well as information on asteroids and quasars.
Gaia is ESA’s billion-star surveyor, designed to provide a precise 3D map of our Milky Way galaxy in order to understand its composition, formation and evolution.
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.
