Moon Rock - Lunar Meteorite

Number: Lunar NWA11474

Type: Feldspathic Breccia

Discovered: 2017 Northwest Africa


When large meteors impact the moon, debris is ejected into space where it falls to earth as meteorites. This is a piece of one of those meteorites.


* The Moon *

The Moon is Earth's only proper natural satellite. It is one-quarter the diameter of Earth, making it the largest natural satellite in the Solar System relative to the size of its planet. It is the fifth largest satellite in the Solar System and is larger than any dwarf planet. The Moon orbits Earth at an average lunar distance of 384,400 km, or about 30 times Earth's diameter. Its gravitational influence produces Earth's tides and slightly lengthens Earth's day. The Moon is classified as a planetary-mass object and a differentiated rocky body. It lacks any significant atmosphere, hydrosphere, or magnetic field, and its surface gravity is about one-sixth of Earth's. Jupiter's moon Io is the only satellite in the Solar System known to have a higher surface gravity and density.


* What is a Meteorite? *

A meteorite is a solid piece of debris from an object, such as a comet, asteroid, or meteoroid, that originates in outer space and survives its passage through the atmosphere to reach the surface of a planet or moon. When the original object enters the atmosphere, various factors such as friction, pressure, and chemical interactions with the atmospheric gases cause it to heat up and radiate energy. It then becomes a meteor and forms a fireball, also known as a shooting star or falling star; astronomers call the brightest examples "bolides". Once it settles on the larger body's surface, the meteor becomes a meteorite. Meteorites vary greatly in size. For geologists, a bolide is a meteorite large enough to create an impact crater.

Moon Rock - Lunar Meteorite

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