1.
• Sputnik-1 - USSR - (1957)- First artificial satellite. • Pioneer 0 - USA Lunar Orbiter - (August 17, 1958) -First stage exploded. • Luna 3 - USSR Lunar Far Side Flyby - (October 4, 1959) - First image of the Moon's hidden side • Apollo 11 - USA Lunar Manned Lander -Apollo 11 was the first manned lunar landing, which took place on July 20, 1969
2. The Apollo 13 malfunction was caused by an explosion and rupture of oxygen tank no. 2 in the service module. The explosion ruptured a line or damaged a valve in the no. 1 oxygen tank, causing it to lose oxygen rapidly.
3. The Space Shuttle is a piloted spacecraft that could be boosted into orbit by a reusable launch vehicle and can return to Earth