"TRAPPIST-1 is an extraordinary star: nearly ten times smaller than our Sun, it hosts a system of seven planets, all of which are similar in size and mass to Earth. Moreover, three of these small planets have a temperature that could allow them to harbor oceans of liquid water! This makes them prime targets for astronomers who, like me, are trying to understand how similar "exoplanets" - those planets found around stars other than the Sun - are to Earth, and the diversity of environments that could harbor life.
This summer, we will be able to better observe these planets with the brand new James Webb Space Telescope: the largest telescope ever launched into space! My team's mission will be to use these unprecedented observations to learn more about the composition of these potentially habitable planets."