US National Aeronautics and Space Administration (Nasa, 美國太空總署), along with a Belgian (比利時的) team of astronomers, has announced that they have discovered a mini solar system about 40 light-years away.
The Trappist-1 system has seven Earth-sized planets and of those planets are at the right distance from the star, called habitable zone, to be not too hot or cold. This means there is probably liquid water on those planets, which can support life.
The system’s star, Trappist-1, is an ultra-cool dwarf star located in the constellation Aquarius (水瓶座). The scientists are currently trying to find out if any of the planets have an atmosphere with ozone, oxygen and carbon dioxide.
(This article is published on Goodies on 6 March 2017)