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Bookmark or Share- In Depth | Earth's Moon – NASA Solar System ExplorationThe Moon is rotating at the same rate that it revolves around Earth (called synchronous rotation), so the same hemisphere faces Earth all the time. ... provide an impact history for the Moon and other bodies in the inner solar system. If you looked in the right places on the Moon, you would find pieces of equipment, American flags, and even a ...
- In Depth | Moons - NASA Solar System ExplorationMoons of the Inner Solar System Earth's Moon probably formed when a large body about the size of Mars collided with Earth, ejecting a lot of material from our planet into orbit. Debris from the early Earth and the impacting body accumulated to form the Moon approximately 4.5 billion years ago (the age of the oldest collected lunar rocks).
- In Depth | Our Solar System – NASA Solar System ExplorationThe giant planets Jupiter and Saturn lead our solar system’s moon counts. In some ways, the swarms of moons around these worlds resemble mini versions of our solar system. Pluto, smaller than our own moon, has five moons in its orbit, including the Charon, a moon so large it makes Pluto wobble. Even tiny asteroids can have moons.
- About Us - NASA Solar System ExplorationLaunched in October 1998, the Solar System Exploration website is a real-time, living encyclopedia of the robotic exploration of our solar system. We provide the public with reliable, accurate, up-to-date information about the planets, moons, asteroids, comets and everything else in our solar system.
- In Depth | Eris – NASA Solar System ExplorationThe plane of Eris' orbit is well out of the plane of the solar system's planets and extends far beyond the Kuiper Belt, a zone of icy debris beyond the orbit of Neptune. As Eris orbits the Sun, it completes one rotation every 25.9 hours, making its day length similar to ours. Moons. Moons. Eris has a very small moon called Dysnomia.
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