伽利略证实不同重量的物体落下的速度相同。 Galileo demonstrated that objects of different weights fall at the same speed.
卡利斯托卫星木星最亮的四颗卫星之一，是距木星第六远的卫星。最初为伽利略所发现，它是最大的行星卫星 One of the four brightest satellites of Jupiter and the sixth in distance from the planet. Originally sighted by Galileo, it is the largest planetary satellite.
伽利略在世之日一直是激烈的论战中心。 In his own lifetime Galileo was the centre of the controversy.
对伽利略来说，地球上和太空中有不同的运动法则是没有多大意义。 It didn't make much sense to Galileo to have different rules for motion on earth and in space.
