The Galilean moons (/ ˌɡælɪˈleɪ.ən /), [1] or Galilean satellites, are the four largest moons of Jupiter: Io, Europa, Ganymede, and Callisto.

Innovative space initiatives have explored Earth’s Moon, other planets in our solar system and their moons, our Sun, and both asteroids and comets. The current range of space activities represents over three hundred billion dollars (U.S.) per year in economic activity.

NASA’s Solar System Interactive (also known as the Orrery) is a live look at the solar system, its planets, moons, comets, and asteroids, as well as the real-time locations of dozens of NASA missions.

A major initiative currently under consideration by the Advisory Team is the design and construction of a prototype lunar base on the slope of Mauna Loa Volcano in Hawaii to enable the development, testing and evaluation of space technologies and integrated systems, as well as to train astronauts and other space professionals, to enable future ...

Mar 4, 2025 · If you look up at the Moon on Thursday, March 6, you might catch a glimpse of something strange—two letters, “X” and “V,” temporarily appearing on the lunar surface.

On July 20, 1969, Neil Armstrong and Buzz Aldrin became the first human beings to set foot on the Moon - a moment commemorated by Armstrong's now historic phrase: "That's one small step for [a] man, one giant leap for mankind."

Discovered in 1995 by the Galileo probe, this moon is less than a mile in diameter and is the natural satellite to the asteroid Ida, a Koronis asteroid located in the belt between Mars and …

Enhanced scientific knowledge derived through space enterprise will also help improve the qualities of life on Earth, while simultaneously advancing missions (both robotic and human) to the Moon, cislunar space, and throughout our Solar System.

A complete list of the 181 moons that are orbiting planets and dwarf planets in our solar system, with facts and information about each moon.

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