The ancient Greeks
2 Look! 50 aliens
B Robots
William Herschel
5 The astronauts
5 The Moon
almost once every month.
- It was 1969 when Neil Armstrong
(walk) on the Moon.
B People
they want to look at the planets.
_ (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
(use) telescopes when​