1 It takes about 27.3 days for the Moon to Earth.
2 Weather __ _ provide us with information about weather on Earth 24 hours a day.
3 Four new scientists just joined the of the International Space Station.
4 Even small__ __ of flying debris can damage the Space Station.
5 This ___ takes tourists on short trips into space.
6 The first to walk on the Moon was Neil Armstrong.
7 A spaceship must go through Earth's to get to outer space.