Recently scientists have discovered two water worlds which are 218 lights years away from the earth.

 

Details

Two alien planets about 218 light years away from Earth have found a twin in the ocean worlds of Europa and Enceladus- moons orbiting Jupiter and Saturn.

 

Key findings

  • The exoplanets, Kepler-138 c and Kepler-138 d, are likely water worlds a feature that scientists have theorised for a long time.
  • These twin planets of the same size and mass are more massive than Earth but lighter than ice giants Uranus and Neptune.
  • They are different from the planets in our solar system, which is chiefly composed of rocky planets like Earth and gas giants like Jupiter.
  • The Kepler- 138 c and d are made up of ingredients¬†lighter than rock (rocky planets like Earth) but heavier than hydrogen or helium (gas-giant planets like Jupiter).
  • The new planet takes 38 days to complete an orbit.
  • It is in the habitable zone, meaning it is located in an orbit that receives just the right amount of heat from its star to allow water to exist in a liquid form.