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

Pioneer 10 was the first spacecraft to visit Jupiter, passing by the planet in 1973.

Cassini was the first spacecraft to orbit Saturn, arriving at the planet in 2004 and spending 13 years studying the planet and its moons.

Voyager 2 was the first spacecraft to visit Uranus and Neptune, passing by the planets in 1986 and 1989, respectively.

Philae was the first spacecraft to land on a comet, specifically Comet 67P/Churyumov–Gerasimenko, in 2014.

NEAR Shoemaker was the first spacecraft to land on an asteroid, specifically Eros, in 2001.

Hayabusa was the first spacecraft to return samples from an asteroid, specifically Itokawa, in 2010.

New Horizons was the first spacecraft to visit Pluto, passing by the dwarf planet in 2015.

Voyager 1 was the first spacecraft to enter interstellar space, crossing the heliopause in 2012.

Mariner 10 was the first spacecraft to visit Mercury, passing by the planet three times in 1974 and 1975.

Sojourner was the first space rover to land on Mars, arriving on the planet in 1997 as part of the Mars Pathfinder mission.

Venera 9 was the first space rover to explore the surface of Venus, landing on the planet in 1975.

Lunokhod 1 was the first space rover to land on the Moon, arriving on the lunar surface in 1970.

Spirit was the first space rover to explore the surface of Mars for an extended period of time, operating on the planet from 2004 to 2010.

Perseverance is the space rover currently exploring the surface of Mars, having landed on the planet in 2021.