TRAPPIST-1 planets likely to have water 💧💧💧🌊

The Earth-sized planets orbiting the TRAPPIST-1 dwarf star may have substanial amounts of water and could be habitable.

They had used Hubble Space Telescope, a joint of European Space Agency & NASA .
The seven Earth- sized planet ( named TRAPPIST-1b , c , d , e , f , g and h ) were discovered in 2017.