C Fill in: compilation, contact, spacecraft, heating, solar. 11 Will inhabitants of other planets ever try to ... us? 12 The ..... system includes the sun and the planets that go around it. 13 Peter made a ..... of rock songs and burned it onto a CD. 14 It was cold in the house because the wasn\'t working 15 Yuri Gagarin travelled in a called Vostok I. a​