Scientists think there might be life on the seven planets in the TRAPPIST-1 solar system. TRAPPIST-1 is a very small sun with seven Earth-sized planets. NASA said three of the planets get heat like the Earth, so life could exist. TRAPPIST-1 is nearly 40 light-years away from Earth. Its sun is not very bright.
NASA said you could see the other TRAPPIST-1 planets if you were on any of them. They would not look small. They would look bigger than our Moon. You would see things on them. A scientist said life can live in very hot caves and at the bottom of the ocean where there is no light. She said life could be on the TRAPPIST-1 planets.