First artificial satellite
Study affects of space on a biological creature, a dog was used in this mission.
Obtain physiological and performance data. Sent a chimpanzee that lasted around 16 minutes performing well, returning alive and well.
A remotely controlled ship with a person inside ( Yuri ) the first person to ever be in space. He was in space for 108 minutes.
First U.S.A citizen to go to space, his name was Alan Shepard. In space for around 15 minutes. In a controlled ship. Objective was to put an astronaut around earths orbit and return safely.
First mission to fly by mars.
Helped learn how astronauts can go outside in a space suit. Walking in space and space walks.
First successful moon landing! People walked on the surface of the moon.
Primary mission to orbit, took first orbital images of Jupiter.
Measure mercury environment and surroundings.
Took advantage of rare planetary alignment and studied the outer solar system.( Gas giants ) and used gravity assists.
Study the Pluto system and other objects from a belt in space.