October 27th in Astronomy and Space Science
![]() | 1961 | The first test flight of a Saturn 1 booster. It carries a dummy payload to an altitude of 135 km (84 miles). |
![]() | 1972 | The US Mariner 9 spacecraft is switched off after exhausting it's maneuvering propellant. Over the course of the previous 12 months it had mapped 100% of the surface of Mars, returned 7,329 photographs, and discovered the 4,800 km (3,000 mile) long Valles Marineris canyon. |