IV) complete with these words:,surface,atmosphere,solar system,star,astronomers. 1)Scientist think there may be water on the ,……………… of Gliese 581g.
2)The sun is not a planet,it is a …………
3)Our Sun and it’s 8 planets are called the ………….
4)… discovered a planet similar to Earth.
5) Planets without an ………….. can not support life.