Scientists have been discussing whether some of the seven planets in the TRAPPIST-1 solar system could contain life. TRAPPIST-1 is a small sun with seven Earth-sized planets, like our own solar system. A NASA scientist said three of the planets get as much heat as the Earth. He said this provides an environment for life to exist. TRAPPIST-1 is nearly 40 light-years away from Earth. Its sun is smaller and less bright than our Sun, but it could support life.
The NASA scientist said you would have a wonderful view of the other planets if you were on any of the TRAPPIST-1 planets. They would not be like dots of light. They would look bigger than our Moon. You would see things on them. Another scientist said life can live in caves that are 130-degrees centigrade and at the bottom of the ocean where there is no light. She said it is possible that life is on some of the TRAPPIST-1 planets.