Astrogeology is the study of the geology of celestial bodies, including planets, moons, asteroids, and comets.

Mars is known for its extensive system of canyons, including the Valles Marineris, which is the largest canyon in the solar system.

Olympus Mons is a volcano located on Mars and is the largest volcano in the solar system, with a height of over 21 kilometers.

Titan, a moon of Saturn, has a surface covered in liquid methane and is the only known celestial body in the solar system to have stable liquid on its surface.

Tycho is a large impact crater on the Moon that is visible from Earth and is one of the most prominent features on the lunar surface.

Enceladus, a moon of Saturn, is known for its geysers, which erupt from its icy surface and release water vapor and other gases into space.

Valles Marineris is a large canyon system on Mars that is thought to have been formed by water erosion and is one of the largest canyons in the solar system.

Io, a moon of Jupiter, has a surface covered in volcanoes and is the most volcanically active body in the solar system.

Hellas Planitia is a large impact crater on Mars that is thought to have been formed by an asteroid or comet impact and is one of the largest impact craters in the solar system.

Europa, a moon of Jupiter, has a surface covered in ice and is thought to have a subsurface ocean, making it a potential habitat for life.

Tharsis Montes is a large volcanic region on Mars that is thought to have been formed by ancient volcanic activity and is home to some of the largest volcanoes in the solar system, including Olympus Mons.

Mars has a surface covered in sand dunes, which are thought to have been formed by the action of wind and are similar to sand dunes found on Earth.

Ishtar Terra is a large impact crater on Venus that is thought to have been formed by an asteroid or comet impact and is one of the largest impact craters in the solar system.

Titan, a moon of Saturn, has a surface covered in lakes and rivers of liquid hydrocarbons, making it the only known celestial body in the solar system to have stable liquid on its surface.

Caloris Basin is a large impact crater on Mercury that is thought to have been formed by an asteroid or comet impact and is one of the largest impact craters in the solar system.