Nozza

Does the earth appear to stay in the same place in the sky when you're
on the moon, or does it wander about the sky, like the moon viewed
from earth?

Thanks

Noz
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Albert

Never particularly thought about it, but I would think it would stay in the
same point in the sky and the stars would move about behind it.

"Nozza" <nozza_again_gns@yahoo.co.uk> wrote in message
news9i8s2tk2evsso5phqoucp2guhubks7g0a@4ax.com...
> Does the earth appear to stay in the same place in the sky when you're
> on the moon, or does it wander about the sky, like the moon viewed
> from earth?

OG

> "Nozza" <nozza_again_gns@yahoo.co.uk> wrote in message
> news9i8s2tk2evsso5phqoucp2guhubks7g0a@4ax.com...
>> Does the earth appear to stay in the same place in the sky when you're
>> on the moon, or does it wander about the sky, like the moon viewed
>> from earth?
>
>
"Albert" <albert@se-england> wrote in message
news:45c457ca$1_3@mk-nntp-2.news.uk.tiscali.com...
> Never particularly thought about it, but I would think it would stay in
> the same point in the sky and the stars would move about behind it.
>

There will be a little bit of movement about the mean point which (we on
earth) see as libration (the slight change in the aspect of the moon that
allows us to overall see 59% of the moon's surface).

http://en.wikipedia.org/wiki/Libration

Stephen Tonkin

Nozza <nozza_again_gns@yahoo.co.uk> wrote:
>Does the earth appear to stay in the same place in the sky when you're
>on the moon, or does it wander about the sky, like the moon viewed
>from earth?

It would wobble around a small amount as a consequence of what we see
from here as libration in the Moon. This is a consequence of the
inclination and ellipticity of its orbit


Best,
Stephen

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OG

"OG" <owen@gwynnefamily.org.uk> wrote in message
news:52j6nsF1oup4cU1@mid.individual.net...
>
>> "Nozza" <nozza_again_gns@yahoo.co.uk> wrote in message
>> news9i8s2tk2evsso5phqoucp2guhubks7g0a@4ax.com...
>>> Does the earth appear to stay in the same place in the sky when you're
>>> on the moon, or does it wander about the sky, like the moon viewed
>>> from earth?
>>
>>
> "Albert" <albert@se-england> wrote in message
> news:45c457ca$1_3@mk-nntp-2.news.uk.tiscali.com...
>> Never particularly thought about it, but I would think it would stay in
>> the same point in the sky and the stars would move about behind it.
>>
>
> There will be a little bit of movement about the mean point which (we on
> earth) see as libration (the slight change in the aspect of the moon that
> allows us to overall see 59% of the moon's surface).
>
> http://en.wikipedia.org/wiki/Libration

I've just used an old version of Redshift to view the Earth as from the
Moon's surface. The movement seems to be bound within a box about 15 degrees
square about the mean; with the moon's path describing an ellipse whose axis
and eccentricity varies month to month.

Sjouke Burry

Nozza wrote:
> Does the earth appear to stay in the same place in the sky when you're
> on the moon, or does it wander about the sky, like the moon viewed
> from earth?
>
> Thanks
>
> Noz
Yep! For the same amount of wiggle the moon face
shows, There is a little bit of movement the face
of the moon does, so we can see ~10??? percent of
the backside, and that will move the earth picture
about the same amount.

Weatherlawyer@gmail.com

Nozza wrote:
> Does the earth appear to stay in the same place in the sky when you're
> on the moon, or does it wander about the sky, like the moon viewed
> from earth?

Yes and no.

It is in captured rotation as the others suggest and as such a person
watching the earth would have to be on the same place of the moon all
the time he was dong so. The same side of the moon to within 59% of
the total surface is always facing the earth.

Which explains the talk about libration and such.

But the sky as a backdrop changes as much as it does when viewed from
earth. Both spin about a common centre and the position of the sun has
all the same angles and the zodiac follows the same calendar.