Hargreaves (crater)
Encyclopedia
Hargreaves is a lunar
crater
that lies in the eastern part of the Moon
, to the east of the Mare Fecunditatis
. It is located to the west of the crater Maclaurin
, and was previously designated Maclaurin S before being given a name by the IAU
. Just to the southeast is Morley
, and to the west is Webb
.
This crater has nearly merged with the larger Maclaurin H to the north, and the interior of both formations has been flooded by lava
. As a result, Hargreaves is now an amphitheater-like formation with a wide gap in the northern rim. There is a slight notch in the southern rim, and a small craterlet is attached to the western outer rim.
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...
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...
that lies in the eastern part 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...
, to the east of the Mare Fecunditatis
Mare Fecunditatis
Mare Fecunditatis is a lunar mare which is 840 km in diameter. The Fecuditatis basin formed in the Pre-Nectarian epoch, while the basin material surrounding the mare is of the...
. It is located to the west of the crater Maclaurin
Maclaurin (crater)
Maclaurin is a lunar impact crater that is located in the eastern part of the Moon's near side. It lies just to the southeast of the small Mare Spumans, and to the northeast of the prominent crater Langrenus. To the east-southeast is Gilbert....
, and was previously designated Maclaurin S before being given a 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...
. Just to the southeast is Morley
Morley (crater)
Morley is a small lunar impact crater that is located in the eastern part of the Moon's near side, to the east of the Mare Fecunditatis. It was formerly a satellite crater of Maclaurin, being designated Maclaurin R, before being given its current name by the IAU...
, and to the west is Webb
Webb (crater)
Webb is a small lunar impact crater that is located near the eastern edge of the Mare Fecunditatis, in the eastern part of the Moon near the equator. It is to the north of the prominent crater Langrenus, and west of Maclaurin....
.
This crater has nearly merged with the larger Maclaurin H to the north, and the interior of both formations has been flooded by lava
Lava
Lava refers both to molten rock expelled by a volcano during an eruption and the resulting rock after solidification and cooling. This molten rock is formed in the interior of some planets, including Earth, and some of their satellites. When first erupted from a volcanic vent, lava is a liquid at...
. As a result, Hargreaves is now an amphitheater-like formation with a wide gap in the northern rim. There is a slight notch in the southern rim, and a small craterlet is attached to the western outer rim.