Final answer:
NASA's Apollo Project is best known for its achievement of landing the first humans on the Moon on July 20, 1969, and for the scientific contributions it has made to lunar geology.
Step-by-step explanation:
NASA's Apollo Project is widely known for landing the first humans on the Moon. This historic event took place on July 20, 1969, when astronauts Neil Armstrong and Buzz Aldrin set foot on the lunar surface, achieving a major milestone in the space race. The Apollo missions contributed significantly to science, bringing back 22 kilograms of lunar samples and advancing our understanding of the Moon's geology. Notably, astronauts also explored the lunar terrain with an electrically propelled rover, and they transmitted extensive video footage back to Earth, including a broadcast of the Apollo 17 crew's takeoff from the Moon.
The Apollo program, which launched nine manned spacecraft between 1968 and 1972, has been a pillar in lunar exploration and has had a lasting impact on space exploration and humanity's quest for knowledge beyond our planet.