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Urey (crater)
Encyclopedia
Urey is a lunar
impact crater
located in the narrow niche of terrain between the western halves of the craters Rayleigh
and Lyapunov
. It lies near the east-northeastern limb of the Moon
, and thus appears very foreshortened when viewed from the Earth
.
The rim of Urey has outward bulges along the western and southeastern sides. There are no notable craters along the rim or inner wall. However there are a few small craterlets on the interior floor, including a crater at the northern end of the central ridge. This range of low hills divides the floor in half, running north-south for a distance of about one third the crater diameter.
This crater was previously designated Rayleigh A, a satellite of Rayleigh, before being given its current name by the IAU
.
Moon
The Moon is Earth's only known natural satellite,There are a number of near-Earth asteroids including 3753 Cruithne that are co-orbital with Earth: their orbits bring them close to Earth for periods of time but then alter in the long term . These are quasi-satellites and not true moons. For more...
impact crater
Impact crater
In the broadest sense, the term impact crater can be applied to any depression, natural or manmade, resulting from the high velocity impact of a projectile with a larger body...
located in the narrow niche of terrain between the western halves of the craters Rayleigh
Rayleigh (lunar crater)
Rayleigh is a lunar crater that lies along the northeast limb of the Moon. This feature is seen edge-on from Earth, making it difficult to see much detail. In addition, libration effects can completely hide this crater from view. It lies just to the north of Lyapunov, and to the northwest of the...
and Lyapunov
Lyapunov (crater)
Lyapunov is a lunar crater named for Aleksandr Lyapunov that is located along the east-northeastern limb of the Moon, and is viewed from the side by observers on Earth...
. It lies near the east-northeastern limb of the Moon
Moon
The Moon is Earth's only known natural satellite,There are a number of near-Earth asteroids including 3753 Cruithne that are co-orbital with Earth: their orbits bring them close to Earth for periods of time but then alter in the long term . These are quasi-satellites and not true moons. For more...
, and thus appears very foreshortened when viewed from the Earth
Earth
Earth is the third planet from the Sun, and the densest and fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System's four terrestrial planets...
.
The rim of Urey has outward bulges along the western and southeastern sides. There are no notable craters along the rim or inner wall. However there are a few small craterlets on the interior floor, including a crater at the northern end of the central ridge. This range of low hills divides the floor in half, running north-south for a distance of about one third the crater diameter.
This crater was previously designated Rayleigh A, a satellite of Rayleigh, before being given its current name by the IAU
International Astronomical Union
The International Astronomical Union IAU is a collection of professional astronomers, at the Ph.D. level and beyond, active in professional research and education in astronomy...
.