Re: Earth/moon/sun 5 billion years from now?

Erik Max Francis <max@xxxxxxxxxxx> wrote:
> raphfrk@xxxxxxxxxxxx wrote:

>> Do the orbits stay circular ? I assume that the requirement is that
>> the mass loss be (relatively) slow ?

> Yeah. The eccentricity would invariably change but not by much.


I distinctly remember reading in more than one place that the Moon
was expected to reverse course and start _approaching_ Earth far in the
future, after it recedes to some maximum distance and Earth and Moon
both become tidally locked to the other. I've searched for more info
today, and the only thing I've found is
http://www.uwgb.edu/dutchs/planets/resonanc.htm which does confirm my
recollection though only in a very brief mention. Go about a third of
the way down the page to the section "Long-Term Effects."
And thanks for mentioning the Ward and Brownlee book, which I
have put on my "to be read" list.


Kevin
.

Relevant Pages

  • Re: Moon hitting earth?
    ... Yeah, closed minds are better. ... edge of the earth. ... The question of whether the moon is getting closer or further away has ... Were you upset that the astronomers gave you ...
    (sci.geo.geology)
  • Re: Moon hitting earth?
    ... Yeah, closed minds are better. ... edge of the earth. ... The question of whether the moon is getting closer or further away has ... And you can count the moon breaking apart as hitting the earth in all ...
    (sci.geo.geology)
  • Re: Bad Astronomy, Indeed
    ... Even the most highly respected scientists ... Just look at the Moon. ... Yeah, it does tell me something, Nimrod. ... Earth does. ...
    (sci.astro)
  • Re: Apple and Earth
    ... >>>The photographer would have to be close to exactly between the earth ... They were in the dark on the moon missions plenty, ... yeah of course I knew that. ...
    (uk.comp.sys.mac)
  • Re: How to Make Use of an Asteroid on Earth
    ... including unlimited renewable energy as is. ... than the moon or any of the planets. ... from Earth and otherwise safely stored on the moon for future use, ... total consists of Methane. ...
    (sci.space.policy)