Lunar and Planetary Geology

Hellas Basin on Mars is the largest impact crater in the Solar System, with a diameter of approximately 2,300 kilometers (1,400 miles).

Basalt is the most common type of rock on the Moon, formed from the cooling of lava flows.

Maria are the dark, flat plains on the Moon, formed from ancient lava flows.

Highlands are the bright, mountainous regions on the Moon, formed from ancient crustal material.

Rilles are the long, narrow valleys on the Moon, formed by ancient lava flows or tectonic activity.

Craters are the large, circular depressions on the Moon, formed by impacts from asteroids and comets.

Ganymede is the largest moon of Jupiter, and the largest moon in the Solar System.

Saturn is the planet with a hexagonal-shaped storm at its north pole.

Triton is the largest moon of Neptune, and the seventh-largest moon in the Solar System.

Saturn is the planet with a thick atmosphere composed mostly of methane.

Venus is the planet with a surface temperature of approximately 450 degrees Celsius, making it the hottest planet in the Solar System.

Saturn is the planet with a prominent ring system, consisting of ice particles and dust.

Jupiter is the planet with a large red spot, a giant storm that has been raging for centuries.

Mars is the planet with a thin atmosphere composed mostly of carbon dioxide.