Planetary protection aims to minimize the risk of biological contamination of other planets and moons, as well as to protect Earth from potential hazards posed by extraterrestrial life.

NASA, the National Aeronautics and Space Administration, is the primary space agency responsible for implementing planetary protection policies and protocols in the United States.

Decontamination is the process of cleaning and sterilizing spacecraft and instruments to remove or kill any microorganisms or organic matter that could potentially contaminate other celestial bodies.

A lander is a spacecraft designed to land on and explore the surface of other planets or moons. It is equipped with instruments and sensors to study the geological features, atmosphere, and potential signs of life on the target body.

A sample return mission is a space mission designed to collect and return samples from other celestial bodies, such as planets, moons, or asteroids, to Earth for detailed analysis in laboratories.

NASA, the National Aeronautics and Space Administration, was the first space agency to successfully land a spacecraft on Mars. The Viking 1 lander touched down on the surface of Mars in 1976.

Perseverance is the name of the NASA rover that is currently exploring the surface of Mars. It landed on the Jezero crater in 2021 and is tasked with searching for signs of ancient life and collecting samples for return to Earth.

Mars is known as the "Red Planet" due to its reddish appearance, which is caused by the presence of iron oxide on its surface.

Ganymede is the largest moon in the Solar System, and it is even larger than the planet Mercury.

NASA, the National Aeronautics and Space Administration, was the first space agency to send a spacecraft to Jupiter. The Pioneer 10 spacecraft flew by Jupiter in 1973.

Voyager 1 is the name of the NASA spacecraft that is currently exploring the outer planets of the Solar System. It is the farthest human-made object from Earth and has traveled beyond the heliopause, the boundary between the Sun's influence and interstellar space.

Saturn is known for its prominent rings, which are made up of ice particles and rock fragments.

Cassini-Huygens was a NASA mission that successfully landed a spacecraft on Titan, Saturn's largest moon, in 2005.

Jupiter is known for its strong magnetic field and auroras, which are caused by the interaction of charged particles with the planet's magnetic field.

New Horizons is the name of the NASA spacecraft that is currently exploring the dwarf planet Pluto and the Kuiper Belt. It flew by Pluto in 2015 and is now continuing its journey through the Kuiper Belt.