2007-02-06 19:32:59 · 6 answers · asked by Lim S 3 in Science & Mathematics ➔ Astronomy & Space
often Moon The natural satellite of Earth, visible by reflection of sunlight and having a slightly elliptical orbit, approximately 356,000 kilometers (221,600 miles) distant at perigee and 406,997 kilometers (252,950 miles) at apogee. Its mean diameter is 3,475 kilometers (2,160 miles), its mass approximately one eightieth that of Earth, and its average period of revolution around Earth 29 days 12 hours 44 minutes calculated with respect to the sun.
A natural satellite revolving around a planet.
2007-02-06 19:45:30 · answer #1 · answered by sweety 1 · 0⤊ 0⤋
The definition adopted has planets and dwarf planets as directly orbiting stars. So the Moon is a moon. Were it ejected from its orbit round the Earth, then it just might actually be a full planet in its own right. It would be marginal, but in an orbit between Earth and Venus or Earth and Mars it would have to be regarded as one, with a "Lambda" of around 20, compared to 940 for Mars (smallest for a planet) and 0.002 for Pluto (largest for a dwarf planet). At 25 times the total mass of the main asteroid belt, it would even have a chance at clearing that out if it ended up there.
2016-03-18 01:41:15 · answer #2 · answered by Anonymous · 0⤊ 0⤋
It revolves around the earth like a satellite. Importantly it does provide moonlight during nights, thus helping us.
2007-02-06 19:41:15 · answer #3 · answered by jaggie_c 4 · 0⤊ 0⤋
it orbits the earth... and i believe the earths gravitational pull keeps it from spinning out into space
2007-02-06 19:35:51 · answer #4 · answered by Anonymous · 0⤊ 0⤋
<>Because it is not man-made. Natural just means naturally-occurring.
2007-02-06 19:35:56 · answer #5 · answered by druid 7 · 0⤊ 0⤋
umm cause it orbits the earth?
2007-02-06 19:34:53 · answer #6 · answered by Anonymous · 0⤊ 0⤋