• The European Space Agency’s star-mapping Gaia probe, covering almost 1.8 billion stars in the Milky Way galaxy, has revealed a phenomena called ‘starquakes’, which are earthquake-like movements but on the surface of stars.
  • Gaia is an astronomical observatory mission launched in December 2013 by the ESA with the objective of creating the most accurate 3D map of the Milky Way by surveying 1% or one billion of the galaxy’s 100 billion stars.
  • The new set of data released was collected from the Gaia probe between 2014 and 2017. The map shows the chemical compositions as well as past and future movements of stars.