Apollo 11 was the first manned mission to land on the Moon, with Neil Armstrong and Buzz Aldrin becoming the first humans to walk on the lunar surface.

Sputnik 1 was the first artificial satellite to be successfully launched into Earth orbit, marking the beginning of the Space Age.

Viking 1 was the first spacecraft to successfully land on Mars and return images and data from the planet's surface.

The Hubble Space Telescope was the first major optical telescope to be placed in orbit around Earth, revolutionizing our understanding of the universe.

Venera 7 was the first spacecraft to successfully land on Venus and transmit data back to Earth.

Europa Clipper is a planned NASA mission to explore Jupiter's moon, Europa, and investigate its potential habitability.

Huygens was a probe that successfully landed on Saturn's moon, Titan, as part of the Cassini-Huygens mission.

Voyager 2 was the first spacecraft to successfully fly by and study Uranus.

Voyager 2 was the first spacecraft to successfully fly by and study Neptune.

New Horizons was the first spacecraft to successfully fly by and study Pluto.

Hayabusa was the first spacecraft to successfully land on an asteroid and return samples to Earth.

Philae was a lander that successfully landed on the comet 67P/Churyumov-Gerasimenko as part of the Rosetta mission.

New Horizons was the first spacecraft to successfully fly by and study a Kuiper Belt object, Pluto.

New Horizons was the first spacecraft to successfully fly by and study a trans-Neptunian object, Arrokoth.