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The crust on the Moon's near side permanently facing Earth is thinner, featuring larger areas flooded by material of the once molten mantle forming today's lunar mare. The Moon is a differentiated body that was initially in hydrostatic equilibrium but has since departed from this condition. [73] It has a geochemically distinct crust, mantle ...
A lunar phase or Moon phase is the apparent shape of the Moon 's directly sunlit portion as viewed from the Earth (because the Moon is tidally locked with the Earth, the same hemisphere is always facing the Earth). In common usage, the four major phases are the new moon, the first quarter, the full moon and the last quarter; the four minor ...
Moonrise and moonset. A full moon sinking behind San Gorgonio Mountain, California, on a mid summer morning. Moonrise and moonset are times when the upper limb of the Moon appears above the horizon and disappears below it, respectively. The exact times depend on the lunar phase and declination, as well as the observer's location.
“Today for the first time in more than a half century, the U.S. has returned to the moon.” Altemus had estimated that Odysseus had an 80% chance of successfully landing on the moon, citing ...
The moon, Venus and Jupiter aligned in the evening sky. The crescent moon appeared below Venus and Jupiter on Tuesday, Feb. 21. A similar alignment will be visible on Thursday, Feb. 23 ...
The moon reaches perigee at about 8:50 p.m. ET on Wednesday. It will be 221,938 miles away — about 17,000 miles closer than average. It will be 221,938 miles away — about 17,000 miles closer ...
Every 18.6 years, the angle between the Moon's orbit and Earth's equator reaches a maximum of 28°36′, the sum of Earth's equatorial tilt (23°27′) and the Moon's orbital inclination (5°09′) to the ecliptic. This is called major lunar standstill. Around this time, the Moon's declination will vary from −28°36′ to +28°36′.
The full moon is the lunar phase when the Moon appears fully illuminated from Earth's perspective. This occurs when Earth is located between the Sun and the Moon (when the ecliptic longitudes of the Sun and Moon differ by 180°). [3] This means that the lunar hemisphere facing Earth—the near side —is completely sunlit and appears as an ...