In 1610, Galileo turned his new telescope toward Venus ... The faster you walk, the greater the tilt needs to be. As Earth orbits the Sun, we can detect a "tilt" of incoming starlight.

PARIS, October 13 (Itar-Tass) —— The Russian upper stage rocket Frigate-MT has orbited successfully two satellites of the European global navigation system Galileo. The satellites separated at ...