Kepler's laws of planetary motion of solar system body number "i" is, according to Newton's laws: where formula_72 is the mass of body "j", formula_73 is the distance between body "i" and body "j", formula_74 is the unit vector from body "i" towards body "j", and the vector summation is over all bodies in the world, besides "i" itself. In the special case where there are only two bodies in the world, Earth and Sun, the acceleration becomes which is the acceleration of the Kepler motion. So this Earth moves around the Sun according to Kepler's laws. If the two bodies in the world are
Gravity: Original Motion Picture Soundtrack Gravity: Original Motion Picture Soundtrack Gravity: Original Motion Picture Soundtrack is the soundtrack album of the 3D science fiction thriller film "Gravity", written by British film composer Steven Price. The album was released in 2013 via WaterTower Music label. Price's score was universally applauded by film critics and audiences alike, leading Price to win and receive nominations for several Best Original Score awards at ceremonies, including a BAFTA Award, a Satellite Award and an Academy Award, as well as a Golden Globe Award nomination. Composer Steven Price was originally called in to help out for three weeks on the music