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Race Jackson Wrote:
-------------------------------------------------------
> Yes. See
> Lunar Orbital Evolution: A Synthesis of Recent Results

> The paper cites
> other papers for the rate of change of the lunar
> orbit, that rate of change is based on the
> measurements from the retroreflectors (which are
> not directly cited in this paper, but are cited in
> the papers cited).


Thanks! I'll take a look.

Edited later to add:

Hi Race,

I’ve read your link, and as you say, it doesn’t mention the retroreflectors, which are merely the means to measure the moon’s distance.

The paper deals with how the rate of recession has speeded up due to tidal friction caused by changes in the geographical location of the continental masses (plate tectonic movement). In the far distant past, when landmasses were different shapes and in different locations, tidal friction was less, hence the rate of recession was slower too.

The distance between earth and moon, given by the history of readings from the reflectors, if extrapolated backwards without taking the changes due to landmasses influencing tidal friction, would give us an impossibly close orbit of the moon – one almost touching the earth’s surface!

As an aside on the retroreflectors, I was reading yesterday about the precision of the readings, a precision “equivalent in accuracy to determining the distance between Los Angeles and New York to 0.25 mm (0.0098 in)”, according to Wiki. That’s some accuracy!

It also mentions the fact that the reflectors are degrading with age. Hopefully, it won’t be another fifty years before astronauts return to replace them with superior modern technology!

Carol



Edited 1 time(s). Last edit at 08-Mar-18 19:11 by carolb.

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Subject Views Written By Posted
To the moon and back... 3812 Racho 04-Jan-18 08:09
Re: To the moon and back... 517 Thunderbird 06-Jan-18 18:10
Grissom and the horrible 'accident' 486 Racho 07-Jan-18 08:08
Re: They went around the Moon Apollo 8 428 molder 17-Jan-18 12:20
Re: They went around the Moon Apollo 8 406 Racho 17-Jan-18 20:31
Re: They went around the Moon Apollo 8 400 molder 18-Jan-18 11:26
Re: They went around the Moon Apollo 8 399 Racho 18-Jan-18 17:52
Re: They went around the Moon Apollo 10 415 molder 19-Jan-18 11:30
Making up ones mind... 385 Racho 21-Jan-18 21:45
Re: Making up ones mind... 482 molder 21-Jan-18 22:53
Re: Making up ones mind... 353 Thunderbird 08-Mar-18 17:19
Re: To the moon and back... 372 Race Jackson 07-Mar-18 18:51
Re: To the moon and back... 355 Racho 07-Mar-18 20:04
Re: To the moon and back... 363 carolb 07-Mar-18 20:29
Re: To the moon and back... 356 Race Jackson 08-Mar-18 15:22
Re: To the moon and back... 353 carolb 08-Mar-18 15:38
Re: No Man placed a reflector on the Moon 370 Thunderbird 08-Mar-18 01:42
Re: No Man placed a reflector on the Moon 371 carolb 08-Mar-18 01:58
At least admit the truth of the matter Carol 395 Racho 08-Mar-18 03:22
I do hope for a reply...either from you or others re: Van Allen belt 396 Racho 08-Mar-18 04:23
Re: Size matters 347 Thunderbird 08-Mar-18 17:44
Re: To the moon and back... 343 Race Jackson 08-Mar-18 20:57
Re: Apollo 11 to the Moon.....Nope.....not happening : ) 384 Thunderbird 08-Mar-18 21:46
Re: To the moon and back... 350 ldennyjr 28-Mar-18 21:59
cardboard airlock doors... 344 Racho 29-Mar-18 01:20
Re: To the moon and back... 344 Race Jackson 29-Mar-18 21:59
Direct question then (not that I haven't posed any before ...) 351 Racho 30-Mar-18 06:49
Re: Direct question then (not that I haven't posed any before ...) 351 ldennyjr 30-Mar-18 21:03
Simple science question? Does AC even work in the vaccum of space...? 343 Racho 01-Apr-18 01:01
Re: NASA is Occult/FreeMasonic deception and Propoganda 340 Thunderbird 02-Apr-18 18:12
Re: NASA is Occult/FreeMasonic deception and Propoganda 315 Race Jackson 03-Apr-18 16:09
Windows matter... 389 Racho 05-Apr-18 01:00
Re: Windows matter... 428 Dr. Troglodyte 05-Apr-18 21:45
Re: Windows matter... 347 ldennyjr 06-Apr-18 02:01
Re: lol!.....the Smithsonian magazine 372 Thunderbird 08-Apr-18 00:52
Re: Eyes wide open... 380 Thunderbird 08-Apr-18 01:14
Re: Simple science question? Does AC even work in the vaccum of space...? 318 Race Jackson 03-Apr-18 16:15
Re: Simple science question? Does AC even work in the vaccum of space...? 319 ldennyjr 03-Apr-18 17:17
Re: Simple science question? Does AC even work in the vaccum of space...? 317 Racho 03-Apr-18 18:33
Re: Simple science question? Does AC even work in the vaccum of space...? 319 ldennyjr 03-Apr-18 20:17
Re: Simple science question? Does AC even work in the vaccum of space...? 333 Racho 03-Apr-18 21:03
Re: Simple science question? Does AC even work in the vaccum of space...? 327 ldennyjr 04-Apr-18 00:47
Re: Simple science question? Does AC even work in the vaccum of space...? 363 carolb 04-Apr-18 01:09
As a heavy machinist... 348 Racho 04-Apr-18 06:35
Re: As a heavy machinist... 319 ldennyjr 04-Apr-18 22:38
So what? 327 Racho 04-Apr-18 23:28
Re: So what? 332 ldennyjr 05-Apr-18 13:40
Re: So what? 653 ldennyjr 11-Apr-18 13:37
Re: As a heavy machinist... 356 carolb 05-Apr-18 15:04
Re: Simple science question? Does AC even work in the vaccum of space...? 331 WhoWeird 03-Apr-18 21:37
Re: Simple science question? Does AC even work in the vaccum of space...? 319 Racho 03-Apr-18 21:39
Re: To the moon and back... 351 Race Jackson 30-Mar-18 16:20
Re: To the moon and back... 327 Race Jackson 04-Apr-18 21:52
Re: To the moon and back... 316 ldennyjr 06-Apr-18 17:28
Re: To the moon and back... 370 carolb 06-Apr-18 19:01


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