Have you ever wondered if we are alone? Is there intelligent life on other planets? Some people might argue there is no intelligent life on our own planet, but that’s for another conversation.
Astronomers have found seven exoplanets (planets outside our solar system) around a dwarf star called TRAPPIST-1, which is about 40 light years away. Their mass estimates indicate that they are rocky planets, rather than gaseous like Jupiter. Three of the planets are in what is called the habitable zone of the star, which means they might have life sustainable atmospheres and liquid water, and may even have oceans on the surface.