Exciting discovery could help humans find life in space
本文作者： TEENS
On Feb 22, NASA (美国宇航局) said they found seven Earth-sized planets. They go around a dwarf star (矮星) called Trappist-1, which is much smaller and cooler than our sun. The system is about 39 light-years (光年) from Earth. Scientists say that distance, in space, is actually close. |  |
| |||||||||||||||||||||||||||||||
京公网安备 11010502033664号