金沙棋牌手机客户端:Alien planets

时间:2019-03-08 08:02:11166网络整理admin

A family of planets has for the first time been found orbiting a Sun-like star. Paul Butler of the Anglo-Australian Observatory and Geoffrey Marcy of San Francisco State University first detected a planet orbiting Upsilon Andromedae in 1996. Sifting through 11 years of observations,