The Soviet Union launched Sputnik 1, the first artificial satellite, into orbit on October 4, 1957.

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

The Outer Space Treaty, also known as the Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer Space, including the Moon and Other Celestial Bodies, is the primary international treaty governing space activities.

In space law, celestial bodies are considered res communis, meaning they are the common heritage of all humankind and cannot be claimed or owned by any state.

The International Space Station (ISS) is a joint project of multiple space agencies, including NASA, ESA, JAXA, and Roscosmos, and is not managed by a single agency.

SpaceX became the first private company to launch a spacecraft into orbit in 2010 with the Falcon 9 rocket.

Viking 1 was the first spacecraft to successfully land on Mars in 1976.

The Hubble Space Telescope was the first space telescope launched by NASA in 1990.

The Soviet Union became the first country to launch a human into space in 1961 with the Vostok 1 mission, carrying Yuri Gagarin.

The Liability Convention, also known as the Convention on International Liability for Damage Caused by Space Objects, establishes the principle of liability for damage caused by space objects.

Venera 7 was the first spacecraft to successfully land on the surface of Venus in 1970.

Pioneer 10 was the first space probe to successfully enter orbit around Jupiter in 1973.

Cassini-Huygens was the first space mission to successfully land a spacecraft on the surface of Saturn's moon, Titan, in 2005.

Voyager 2 was the first space probe to successfully enter orbit around Uranus in 1986.

No spacecraft has yet successfully landed on the surface of Neptune's moon, Triton.