A group of astronomers surveyed sun-like stars in the Orion nebula open cluster and found that fewer than 10 percent have enough surrounding dust to make Jupiter-sized planets.

 
  • 一组科学家调查了猎户星座星云里类似太阳的恒星,发现低于10%25星球能够有足够的环绕尘埃形成木星规模的行星。
今日热词
目录 附录 查词历史