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  2. Lunar distance - Wikipedia

    en.wikipedia.org/wiki/Lunar_distance

    In contrast, the Lunar distance (LD or ), or EarthMoon characteristic distance, is a unit of measure in astronomy. More technically, it is the semi-major axis of the geocentric lunar orbit . The lunar distance is on average approximately 385,000 km (239,000 mi), or 1.28 light-seconds ; this is roughly 30 times Earth's diameter or 9.5 times ...

  3. List of natural satellites - Wikipedia

    en.wikipedia.org/wiki/List_of_natural_satellites

    Irregular moons are probably minor planets that have been captured from surrounding space. Most irregular moons are less than 10 kilometres (6.2 mi) in diameter. The earliest published discovery of a moon other than Earth's was by Galileo Galilei, who discovered the four Galilean moons orbiting Jupiter in 1610. Over the following three ...

  4. Natural satellite - Wikipedia

    en.wikipedia.org/wiki/Natural_satellite

    The Moon orbiting around Earth (observed by the Deep Space Climate Observatory) A natural satellite is, in the most common usage, an astronomical body that orbits a planet, dwarf planet, or small Solar System body (or sometimes another natural satellite). Natural satellites are colloquially referred to as moons, a derivation from the Moon of Earth.

  5. Orbit of the Moon - Wikipedia

    en.wikipedia.org/wiki/Orbit_of_the_Moon

    Considering the EarthMoon system as a binary planet, its centre of gravity is within Earth, about 4,671 km (2,902 miles) [24] or 73.3% of the Earth's radius from the centre of the Earth. This centre of gravity remains on the line between the centres of the Earth and Moon as the Earth completes its diurnal rotation.

  6. Lunar Roving Vehicle - Wikipedia

    en.wikipedia.org/wiki/Lunar_Roving_Vehicle

    It could carry a maximum payload of 970 pounds (440 kg), including two astronauts, equipment, and cargo such as lunar samples, and was designed for a top speed of 6 miles per hour (9.7 km/h), although it achieved a top speed of 11.2 miles per hour (18.0 km/h) on its last mission, Apollo 17.

  7. Moon - Wikipedia

    en.wikipedia.org/wiki/Moon

    The Moon is Earth's only natural satellite.It orbits at an average distance of 384,400 km (238,900 mi), about 30 times the diameter of Earth. Tidal forces between Earth and the Moon have synchronized the Moon's orbital period (lunar month) with its rotation period at 29.5 Earth days, causing the same side of the Moon to always face Earth.

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    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Planetary-mass moon - Wikipedia

    en.wikipedia.org/wiki/Planetary-mass_moon

    Determining whether a moon is currently in hydrostatic equilibrium requires close observation, and is easier to disprove than to prove. Earth's entirely rocky moon solidified out of equilibrium billions of years ago, [14] but most of the other six moons larger than Pluto, four of which are predominantly icy, are assumed to still be in ...