[I'm not really sure where this thread belongs, btu I thought this forum seemed appropriate.]
If the moon is receding from the earth at a rate of ~2.5cm per year, how can the moon be "the closest it's been to the earth for 18 years" tonight?
Thank you : )
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The Moon watch
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Last edited by IQ Test; 19-03-2011 at 21:48.
- 19-03-2011 21:46
- 19-03-2011 21:50
- 19-03-2011 21:56
It is getting further away at that slow rate but it's at Perigee right now (closest point) cos it's orbit isn't completely circular, tis elliptical.
- 19-03-2011 22:10
As a non-sciencey type that was forced into doing ****** GNVQ science instead of GCSEs because of my ****ty failure of a school I find it amazing that things like this are so ****ing obvious to me, and not to the average elite A*INEVERYTHING forum members.
Well, I say non-sciencey. Maths or science is probably what I should be studying now. Whatever. >_>
- 19-03-2011 22:13
The moon looks the same size as it always is when it's full today...well to me it is
- 19-03-2011 22:55
I think I can explain it a bit better than others have:
The moon doesn't orbit the Earth in a circle; it's more erratic than that. This is the same for all orbits I think, such as planets around the Sun.
Just think of an oval orbit rather than a circle for a simpler idea.
So at one point the moon will be closer to the Earth, at the opposite end the moon would be farther from the Earth.
This is not going to be affected by a change of not even half a metre (2.5cm x 18) in distance from the Earth.Last edited by nonotrly; 19-03-2011 at 22:56.