The first three Pioneer missions were intended to be the first ever "lunar attempts", but failed. Pioneer 4 and 5 however, were successful. 10 & 11 were the first ever vehicles to visit Jupiter. 12 & 13 observed Venus.
First satellite sent into space by the United States. Burned up in Earths atmosphere after 58,000 + orbits.
The first spacecraft to ever land on Mars.
First Voyager spacecraft to launch was Voyager 2. Voyager 1 launched just a few weeks later. Longest operating spacecraft EVER! Journey to Uranus & Neptune. Goal: To enter interstellar space.
An unmanned NASA spacecraft that studied Jupiter and its moons.
A rover conducted many experiments on Mars surface.
Robotic spacecraft sent to the Saturn system. It studied the planet and its many natural satellites and observed Jupiter, the Heliosphere and tested the theory of relativity.
Mission to collect stardust.
During the missions the rovers studied the landscape or rocks on Mars.
Space probe. Goal: to study the composition of a comet.
Experimental space habitat.
Mission scientists used instruments aboard the lander to search for environments suitable for microbial life on Mars, and researched the history of water there.
Program to build a radiation tolerant IP router for spacecrafts.
Car sized robotic rover Gale crater on Mars.
Space based X-Ray telescope that uses a Wolter telescope to focus on high energy.
First human spacecraft program in the U.S. Goal: Put humans in orbit around Earth (before Soviet Union)
Third human spaceflight. Apollo 1: disaster. Apollo 8: Orbited the moon. Apollo 11: Landed on the moon. Apollo 13: Accident.
Second human spaceflight of NASA develop space techniques in order to support the Apollo mission in the future.
U.S. Space station.
Reusable launch system and orbital spacecraft.
Space program between Russia and U.S.
Space station/ facility & research laboratory.
Transporting cargo - possibly humans (later)
Carried into orbit by a shuttle