Dark matter neither reflects nor emits light, yet it binds galaxies together and might constitute about 80% of the universe's mass. Similarly, dark energy could account for the faster-than-expected expansion of the universe. The Euclid aims to map this "dark universe".


  1. Built by the European Space Agency.
  2. Scheduled to lift off from Cape Canaveral on a Space X Falcon 9 rocket in early July.
  3. It will be stationed where the sun's and Earth's gravitational pull balance out the same orbit as the James Webb Space Telescope.
  4. Over five years, 2,000 scientists will survey 15,000 square degrees of the sky.
  5. It may take a further five years to analyse the results.


Source Information: