New answers tagged

4 votes
Accepted

Why doesn't lunar perigee always occur in the same lunar phase?

The orbit of the Moon is not exactly simple. First, it’s an ellipse, as you probably know already. The Earth is at one focus of the ellipse; this is why sometimes the Moon is closer, sometimes it’s ...
-2 votes

Why doesn't lunar perigee always occur in the same lunar phase?

While the Moon orbits the Earth, the Earth orbits the Sun. So, by the time the Moon completes one orbit around the Earth, the Earth will have completed about 1/13th of its orbit around the Sun. This ...
  • 3,058
4 votes
Accepted

Help me better understand how the plane of Moon's orbit around Earth behaves

Indeed, the moon's orbital plane is inclined with respect to the earth's equatorial plane, and this inclination changes over time: the angle between both planes varies between 28°36′ and 18°20' with a ...
  • 660
2 votes

Moon's rotation and revolution

You use "locked" and you seem to think this means "not rotating". This is not true. Find an open space. Put something (eg a football) in the middle. Walk in a circle around the ...
  • 94.2k
4 votes

Tidal locking of Moon

Tidally locked means that it's always facing Earth with the same side. We know it circles Earth because we know there are lunar and solar eclipses. Thus it cannot circle Earth, be tidally locked AND ...
  • 12.8k
-8 votes

Moon's rotation and revolution

UTTER NONSENSE: "Lunar synchronous rotation is quite evident and a trivial logical step for any human being having a model of the Earth-Moon system that involves the Moon being a spherical object ...

Top 50 recent answers are included