Science Forums Biology Forum Molecular Biology Forum Physics Chemistry Forum Distance between Sun and Earth remain same?

 Physics Forum Physics Forum. Discuss and ask physics questions, kinematics and other physics problems.

# Distance between Sun and Earth remain same?

## Distance between Sun and Earth remain same? - Physics Forum

### Distance between Sun and Earth remain same? - Physics Forum. Discuss and ask physics questions, kinematics and other physics problems.

#11
11-06-2008, 11:53 PM
 carlip-nospam@physics.ucdavis.edu Guest Posts: n/a
Distance between Sun and Earth remain same?

In sci.physics.relativity Sanny <[Only registered users see links. ]> wrote:

The shape and size of the Earth's orbit change in time, due to the
influence of the gravitational fields of the other planets. But the
change is very slow. For example, the orbit is predicted to become
slightly less circular over the next 100 million years, getting up
to an eccentricity of about .06 (that is, a difference of about .2%
between the longest and shortest axis), then more circular over
the following 100 million years. Mercury's orbit is less stable, and
it is conceivable that Mercury could be ejected from the Solar System
over the next five billion years. (These numbers are from computer
simulations; I got them from an article by Laskar in the Proceedings
of the XIth International Congress of Mathematical Physics, 1994.)

There's a nice description at
[Only registered users see links. ]

No.

[...]

It changes slightly with time, because of the effect of other planets' gravity
(along with tiny corrections from general relativity). The Earth's
peihelion -- the point of closest approach to the Sun -- shifts by about
1/300 of a degree per year.

Steve Carlip

#12
11-07-2008, 02:10 AM
 N:dlzc D:aol T:com \(dlzc\) Guest Posts: n/a
Distance between Sun and Earth remain same?

Dear Double-A:

"Double-A" <[Only registered users see links. ]> wrote in message
news:[Only registered users see links. ]...
On Nov 6, 1:11 pm, dlzc <[Only registered users see links. ]> wrote:

It is much smaller, such that solar wind would hardly allow it to
retain any atmosphere. And if it formed from "the stuff floating
on top", it would be comprised of the stuff the Moon is.

If you think we have no impact craters here on Earth...
[Only registered users see links. ]
[Only registered users see links. ]
[Only registered users see links. ]
[Only registered users see links. ]
[Only registered users see links. ]
[Only registered users see links. ]

Yes, that and no magnetic field. Jupiter's companions have its
field to help brake *some* gasses.

[Only registered users see links. ]
.... it *may* have a tenuous atmosphere.

[Only registered users see links. ]
.... the Moon does have a tenuous atmosphere.

It resembles most any rocky body with a tenuous atmosphere that
has been anywhere in our solar system for any time.

http://www.astro.psu.edu/users/niel/...lean-moons.jpg
.... Ganymede and Callisto are close cousins to our Moon based on
"looks like".

If you are interested in "tidal rhythmites"
[Only registered users see links. ]

If you are interested in theories of the genesis of our Moon:
[Only registered users see links. ]

Been nice chatting with you.

David A. Smith

#13
11-07-2008, 02:12 AM
 Greg Neill Guest Posts: n/a
Distance between Sun and Earth remain same?

Double-A wrote:

Atmosphere retention does not depend upon size (mass) alone,
it is strongly depnedent on energy input from the Sun. If
the Earth massed as little as the Moon, it would also have
long ago lost its atmosphere at its proximity to the Sun.

#14
11-07-2008, 02:09 PM
 Mike Guest Posts: n/a
Distance between Sun and Earth remain same?

On Nov 6, 10:47*am, Uncle Al <[Only registered users see links. ].net> wrote:

Hi Al, still a ray of sunshine I see.
#15
11-07-2008, 05:47 PM
Distance between Sun and Earth remain same?

On Nov 6, 11:53 am, Antares 531 <[Only registered users see links. ]> wrote:

Because it's what a devout Zionist/Nazi of the Rothschild kind does
best. It's all about the me, me, me factor, and the screw everyone
and most everything else in sight policy of their mainstream status
quo, or bust..

~ BG
#16
03-31-2012, 11:13 AM
Pipette Filler

Join Date: Mar 2012
Posts: 20
Thanks: 0
Thanked 0 Times in 0 Posts
Re: Distance between Sun and Earth remain same?

Yes, it becomes more circular.
pretty much.
No
Balderdash...
I n the same period
Almost.
#17
04-04-2012, 05:51 PM
Pipette Filler

Join Date: Apr 2012
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Re: Distance between Sun and Earth remain same?

hi
thanks..
#18
04-04-2012, 05:52 PM
Pipette Filler

Join Date: Apr 2012
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Re: Distance between Sun and Earth remain same?

Hi friends..........
#19
04-04-2012, 05:52 PM
Pipette Filler

Join Date: Apr 2012
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Re: Distance between Sun and Earth remain same?

good topic.......
#20
04-04-2012, 05:53 PM
Pipette Filler

Join Date: Apr 2012
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Re: Distance between Sun and Earth remain same?

Hi,

 Tags distance , earth , remain , sun

 Thread Tools Display Modes Linear Mode

 Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is OffTrackbacks are On Pingbacks are On Refbacks are On Forum Rules
 Forum Jump User Control Panel Private Messages Subscriptions Who's Online Search Forums Forums Home General Science Forums     Biology Forum     New Member Introductions Forum     Chemistry Forum         Organic Chemistry Forum     Physics Forum     General Science Questions and Layperson Board         Science and Religion Forum         Zoology Forum     Environmental Sciences and Issues General Forum     Chit Chat         Science and Lab Jokes     Article Discussion     Molecular Biology News and Announcements         Conferences , Symposiums and Meetings         Molecular Station Suggestion Forum         Instructions for Posting, Help, and Frequently Asked Questions     Science News and Views         Molecular Biology Lectures and Videos     Science Careers         Post-doctoral         Medical School         Ph.D Doctor of Philosophy         Science Jobs Forum Molecular Research Topics Forum     PCR - Polymerase Chain Reaction Forum         Real-Time PCR and Quantitative PCR Forum     Bioinformatics         BioStatistics Forum     Molecular Biology Techniques         Molecular Cloning Forum         Electrophoretic Mobility Shift Assay Forum         Agarose Gel Electrophoresis Forum         BioPhysics Forum         Gene Therapy     Cell Biology and Cell Culture         Apoptosis, Autophagy, and Necrosis Forum         Flow Cytometry Forum         Transfection Forum         Confocal - Microscopy Imaging Techniques         Immunology and Host-Pathogen Interactions         Signalling Biology         Stem Cell Forum     Basic Lab Protocols and Techniques         SDS-PAGE Gel Electrophoresis Forum     DNA Techniques         DNA Extraction Forum         cDNA Forum     Epigenetics Forum: DNA Methylation, Histone and Chromatin Study         ChIP Chromatin Immunoprecipitation Forum     Protein Science         Antibody Forum             Immunoprecipitation Forum         Western Blot Forum         Protein Crystallography Forum         Recombinant Protein Forum         ELISA Assay Forum         Protein Forum     Proteomics Forum         Peptide Forum         Mass Spectrometry Forum         2-D Gel Electrophoresis Forum     Omics and Genomics Forum         Microarrays Forum         Genomics Forum     RNA Techniques Forum         RNAi and SiRNA Forum     Histology Forum         Immunohistochemistry Forum         Immunocytochemistry Forum         Electron Microscopy Forum         Immunofluorescence Forum     Protocols and Methods Forum     Molecular Biology Articles and Protocols     Animal and Molecular Model Systems         Drosophila Forum         Yeast Forum         Zebrafish Forum         Botany Forum         C Elegans Forum         Arabidopsis and Plant Biology         Microbiology Forum         Knockout Mouse Forum     Chromatography Forum Products and Vendor Discussion     Molecular Biology Products and Vendors         Bad Product/Service? Post Here         Lab Equipment Discussion and Reviews Regional Molecular Biology Discussion     Forum Chemie     Forum Biologie     Forum Biologia     Forum Chimica     Forum Physik     Forum De Chimie     Forum De Physique     Forum Chemia     中国人分子的生物学论坛 Chinese     Greek Molecular Biology Forums     分子生物学のフォーラム Japanese     ميدان فارسى. Persian Molecular Biology     [أربيك] علم ساحة- Arabic     Forum de Biologie Moleculaire     Forum Biologia Molecolare     Forum die Molekularbiologie     Foro Biologia Molecular

All times are GMT. The time now is 12:37 PM.

 Contact Us - Molecular Biology - Archive - Privacy Statement - Top