Sputnik 1 was launched on October 4, 1957, marking a major milestone in the Space Race between the Soviet Union and the United States.

Neil Armstrong became the first person to walk on the moon on July 20, 1969, during the Apollo 11 mission.

Mariner 4 was the first spacecraft to successfully reach Mars, flying by the planet in 1965 and returning valuable data and images.

The Hubble Space Telescope, launched in 1990, has transformed our knowledge of the universe with its stunning images and groundbreaking discoveries.

The Cassini-Huygens mission, a joint project between NASA and the European Space Agency, successfully landed a probe on Titan in 2005, providing valuable insights into the moon's unique environment.

Mariner 10 was the first spacecraft to orbit Mercury, completing three successful flybys of the planet between 1974 and 1975.

Venera 7 was the first spacecraft to successfully land on Venus and transmit data back to Earth, providing valuable information about the planet's harsh conditions.

Pioneer 10 was the first spacecraft to successfully enter orbit around Jupiter, completing its mission in 1973.

Viking 1 was the first spacecraft to successfully land on Mars and conduct experiments on the planet's surface in 1976.

Cassini-Huygens was the first spacecraft to successfully enter orbit around Saturn, completing its mission in 2017.

Voyager 2 was the first spacecraft to successfully enter orbit around Uranus, completing its mission in 1989.

Voyager 2 was the first spacecraft to successfully enter orbit around Neptune, completing its mission in 1989.

Philae, a lander carried by the Rosetta spacecraft, was the first spacecraft to successfully land on a comet, specifically Comet 67P/Churyumov-Gerasimenko, in 2014.

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

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