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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... 3566 Racho 04-Jan-18 08:09
Re: To the moon and back... 439 Thunderbird 06-Jan-18 18:10
Grissom and the horrible 'accident' 414 Racho 07-Jan-18 08:08
Re: They went around the Moon Apollo 8 356 molder 17-Jan-18 12:20
Re: They went around the Moon Apollo 8 331 Racho 17-Jan-18 20:31
Re: They went around the Moon Apollo 8 327 molder 18-Jan-18 11:26
Re: They went around the Moon Apollo 8 326 Racho 18-Jan-18 17:52
Re: They went around the Moon Apollo 10 344 molder 19-Jan-18 11:30
Making up ones mind... 320 Racho 21-Jan-18 21:45
Re: Making up ones mind... 409 molder 21-Jan-18 22:53
Re: Making up ones mind... 285 Thunderbird 08-Mar-18 17:19
Re: To the moon and back... 298 Race Jackson 07-Mar-18 18:51
Re: To the moon and back... 282 Racho 07-Mar-18 20:04
Re: To the moon and back... 290 carolb 07-Mar-18 20:29
Re: To the moon and back... 285 Race Jackson 08-Mar-18 15:22
Re: To the moon and back... 281 carolb 08-Mar-18 15:38
Re: No Man placed a reflector on the Moon 294 Thunderbird 08-Mar-18 01:42
Re: No Man placed a reflector on the Moon 303 carolb 08-Mar-18 01:58
At least admit the truth of the matter Carol 309 Racho 08-Mar-18 03:22
I do hope for a reply...either from you or others re: Van Allen belt 312 Racho 08-Mar-18 04:23
Re: Size matters 279 Thunderbird 08-Mar-18 17:44
Re: To the moon and back... 270 Race Jackson 08-Mar-18 20:57
Re: Apollo 11 to the Moon.....Nope.....not happening : ) 306 Thunderbird 08-Mar-18 21:46
Re: To the moon and back... 278 ldennyjr 28-Mar-18 21:59
cardboard airlock doors... 275 Racho 29-Mar-18 01:20
Re: To the moon and back... 267 Race Jackson 29-Mar-18 21:59
Direct question then (not that I haven't posed any before ...) 279 Racho 30-Mar-18 06:49
Re: Direct question then (not that I haven't posed any before ...) 280 ldennyjr 30-Mar-18 21:03
Simple science question? Does AC even work in the vaccum of space...? 269 Racho 01-Apr-18 01:01
Re: NASA is Occult/FreeMasonic deception and Propoganda 270 Thunderbird 02-Apr-18 18:12
Re: NASA is Occult/FreeMasonic deception and Propoganda 242 Race Jackson 03-Apr-18 16:09
Windows matter... 306 Racho 05-Apr-18 01:00
Re: Windows matter... 322 Dr. Troglodyte 05-Apr-18 21:45
Re: Windows matter... 272 ldennyjr 06-Apr-18 02:01
Re: lol!.....the Smithsonian magazine 299 Thunderbird 08-Apr-18 00:52
Re: Eyes wide open... 300 Thunderbird 08-Apr-18 01:14
Re: Simple science question? Does AC even work in the vaccum of space...? 245 Race Jackson 03-Apr-18 16:15
Re: Simple science question? Does AC even work in the vaccum of space...? 246 ldennyjr 03-Apr-18 17:17
Re: Simple science question? Does AC even work in the vaccum of space...? 247 Racho 03-Apr-18 18:33
Re: Simple science question? Does AC even work in the vaccum of space...? 248 ldennyjr 03-Apr-18 20:17
Re: Simple science question? Does AC even work in the vaccum of space...? 262 Racho 03-Apr-18 21:03
Re: Simple science question? Does AC even work in the vaccum of space...? 255 ldennyjr 04-Apr-18 00:47
Re: Simple science question? Does AC even work in the vaccum of space...? 284 carolb 04-Apr-18 01:09
As a heavy machinist... 268 Racho 04-Apr-18 06:35
Re: As a heavy machinist... 246 ldennyjr 04-Apr-18 22:38
So what? 254 Racho 04-Apr-18 23:28
Re: So what? 258 ldennyjr 05-Apr-18 13:40
Re: So what? 513 ldennyjr 11-Apr-18 13:37
Re: As a heavy machinist... 279 carolb 05-Apr-18 15:04
Re: Simple science question? Does AC even work in the vaccum of space...? 256 WhoWeird 03-Apr-18 21:37
Re: Simple science question? Does AC even work in the vaccum of space...? 250 Racho 03-Apr-18 21:39
Re: To the moon and back... 280 Race Jackson 30-Mar-18 16:20
Re: To the moon and back... 256 Race Jackson 04-Apr-18 21:52
Re: To the moon and back... 250 ldennyjr 06-Apr-18 17:28
Re: To the moon and back... 298 carolb 06-Apr-18 19:01


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