Planetary science aims to understand the processes that shaped our solar system and the objects within it, including their formation, evolution, and composition.

Planetary science focuses on the study of objects within our solar system, including planets, moons, asteroids, comets, and dwarf planets. Stars, on the other hand, are not part of our solar system and are studied in the field of astrophysics.

Jupiter is the largest planet in our solar system, both in terms of mass and volume. It is a gas giant composed primarily of hydrogen and helium.

Mars is often referred to as the "Red Planet" due to the reddish appearance of its surface, caused by the presence of iron oxide (rust).

Ganymede is the largest moon in our solar system, and it is even larger than the planet Mercury. It is a moon of Jupiter and is composed primarily of ice and rock.

Jupiter has the most moons of any planet in our solar system, with over 90 known moons. Saturn is a close second, with over 80 moons.

The Asteroid Belt is a region of space between the orbits of Mars and Jupiter that contains a large number of asteroids, which are small rocky bodies.

Halley's Comet is known for its long, flowing tail, which can sometimes be seen from Earth with the naked eye. It has a orbital period of about 76 years.

Pluto was once considered the ninth planet of our solar system, but it was reclassified as a dwarf planet in 2006. It is the largest known dwarf planet and is located in the Kuiper Belt.

Viking 1 was the first spacecraft to successfully land on Mars, doing so in 1976. It conducted a number of experiments and sent back valuable data about the Martian surface and atmosphere.

Europa Clipper is a joint NASA-ESA mission that is scheduled to launch in 2023 and arrive at Jupiter in 2030. Its primary goal is to investigate Jupiter's moon Europa, which is thought to have a subsurface ocean that may be habitable.

Cassini-Huygens was the first spacecraft to successfully enter orbit around Saturn, doing so in 2004. It spent 13 years studying Saturn, its rings, and its moons, including Titan.

Voyager 1 is the spacecraft that is currently exploring the outer reaches of our solar system. It was launched in 1977 and has traveled beyond the orbit of Pluto. It is now in interstellar space.

Philae was the first spacecraft to successfully land on a comet, doing so on Comet 67P/Churyumov-Gerasimenko in 2014. It was part of the Rosetta mission, which was a joint ESA-NASA mission.

The Mars Sample Return Mission is an upcoming NASA mission that aims to return samples from Mars to Earth. It is scheduled to launch in 2026 and return samples in 2033.