Largest survey of stars carried out by ESA’s Gaia

Q.  Largest ever survey of stars in the Milky Way has been conducted by which ESA satellite?
- Published on 16 Sep 16

a. Rosetta
b. Cassini
c. Gaia
d. None of the above

ANSWER: Gaia
 
Largest survey of stars carried out by ESA’s GaiaThe largest ever survey of stars in the Milky Way was made public on 14th Sept, 2016.
  • Data on 1142 million stars was gathered by Gaia a satellite launched by ESA in July 2014
  • The release features the distances and motions across the sky for more than two million stars
  • Gaia is currently a million km from earth
  • It is scheduled to prepare a 3D map of a billion stars
  • There are 100 billion stars in the Milky Way
  • Gaia is at the forefront of astrometry
  • Launched 1000 days ago, it began its scientific work in July 2014
  • The first release encompasses 14 months of scanning the sky up to September 2015
  • Satellite is working wel
  • Transforming raw information into reliable data has been entrusted to a consortium of 450 scientists and engineers called the DPAC or Gaia Data Processing and Analysis Consortium.

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