Earth 3D Model – NASA Solar System Exploration
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In Depth | Earth's Moon – NASA Solar System Exploration
Earth's Moon is the only place beyond Earth where humans have set foot, so far. Earth's only natural satellite is simply called "the Moon" because people didn't know other moons existed until Galileo …
By the Numbers | Earth's Moon – NASA Solar System Exploration
NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.
In Depth | Moons – NASA Solar System Exploration
Earth's Moon Martian Moons Phobos and Deimos Moons of the Giant Planets Jupiter's menagerie of moons includes the largest in the solar system (Ganymede), an ocean moon (Europa) and a volcanic …
In Depth | Our Solar System – NASA Solar System Exploration
The planetary system we call home is located in an outer spiral arm of the Milky Way galaxy. Our solar system consists of our star, the Sun, and everything bound to it by gravity – the planets Mercury, …
In Depth | Titan – NASA Solar System Exploration
Like Earth, Titan’s atmosphere is primarily nitrogen, plus a small amount of methane. It is the sole other place in the solar system known to have an earthlike cycle of liquids raining from clouds, flowing …
In Depth | 1P/Halley – NASA Solar System Exploration
Halley was last seen in Earth's skies in 1986 and was met in space by an international fleet of spacecraft. It will return in 2061 on its regular 76-year journey around the Sun. The History of …
Mars By the Numbers - NASA Solar System Exploration
Apr 9, 2026 · Mars is the fourth planet from the Sun, and the seventh largest. It’s the only planet we know of inhabited entirely by robots.
In Depth | Ganymede – NASA Solar System Exploration
The discovery, along with his discovery of three other large moons around Jupiter, was the first time a moon was discovered orbiting a planet other than Earth. The discovery eventually led to the …
In Depth | Europa – NASA Solar System Exploration
In fact, the Galilean moons are sometimes called a “mini solar system” since they formed from the leftovers of Jupiter similar to how Earth and other planets formed from gas and dust left over from the …