78 Read and complete. 11
1 The ancient Greeks
2 Look! 50 aliens
3 Robots
(call) the Sun Helios,
(come) out of the spaceship
(explore) Mars now to find information
(discover) Uranus in 1781.
(leave) for the Moon tomorrow
(travel) around the Earth
4 William Herschel
5 The astronauts
6 The Moon
almost once every month.
7 It was 1969 when Neil Armstrong
(walk) on the Moon.
8 People
they want to look at the planets.
(use) telescopes when