The Synthesis of "moon seas"

Discover the lunar maria, the vast, dark 'seas' on the Moon. Learn how these ancient volcanic plains were formed and what they reveal about lunar history.

Discover the eight phases of the Moon, from New Moon to Full Moon. Learn how the lunar cycle is caused by the Moon's orbit around Earth.

Discover Titan, Saturn's largest moon. With a thick atmosphere and liquid lakes, it's a prime target in the search for life beyond Earth.

Discover Enceladus, Saturn's icy moon with a subsurface ocean and geysers that hint at the potential for extraterrestrial life.

Discover tidal forces, the gravitational effect that stretches bodies. Learn how the Moon's gravity causes Earth's ocean tides and affects space.

Discover Jupiter's four largest moons—Io, Europa, Ganymede, and Callisto—and why they are central to the modern search for extraterrestrial life.

Discover Phobos and Deimos, the two small moons of Mars. Learn about their mysterious origins and the upcoming missions set to explore them up close.

Discover Ceres, the largest object in the asteroid belt. Is this dwarf planet a hidden ocean world? Learn about NASA's Dawn mission findings.