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As a theoretical physicist I have a reasonable understanding of the mechanics and stability of Earth's orbit. The forces required to make any substantial change to Earth's orbit would be immense. Our very existence guarantees this never happened.

You can search the research literature using Google scholar as well as I can. You will see that detailed simulations of the changes to Earth's precession constant and obliquity show that they are very stable on geological timescales. Your error is in making a linear extrapolation (and using very old data). Earth's dynamics are not linear on long timescales.

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Welcoming Dr Martin Sweatman our featured author for August 2019 59770 Graham Hancock 05-Aug-19 12:38
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 614 Martinsw1 05-Aug-19 12:54
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 600 cloister 06-Aug-19 04:28
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 616 Martinsw1 06-Aug-19 09:00
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 540 cloister 07-Aug-19 10:54
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 566 Martinsw1 07-Aug-19 13:58
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 539 cloister 08-Aug-19 07:53
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 535 Martinsw1 08-Aug-19 14:55
Re: Sweatman's diluted pseudo archaeo astronomy 639 Edmond 06-Aug-19 19:51
Re: Sweatman's diluted pseudo archaeo astronomy 566 Martinsw1 07-Aug-19 05:51
Re: Sweatman's diluted pseudo archaeo astronomy 642 Edmond 07-Aug-19 08:48
Re: Sweatman's diluted pseudo archaeo astronomy 546 Martinsw1 07-Aug-19 14:05
Re: Sweatman's diluted pseudo archaeo astronomy 551 Martinsw1 07-Aug-19 20:28
Re: Sweatman's diluted pseudo archaeo astronomy 534 Merrell 08-Aug-19 11:48
Re: Sweatman's diluted pseudo archaeo astronomy 547 Martinsw1 07-Aug-19 21:28
Re: Sweatman's diluted pseudo archaeo astronomy 577 Edmond 08-Aug-19 07:42
Re: Sweatman's diluted pseudo archaeo astronomy 543 Martinsw1 08-Aug-19 14:35
Re: Sweatman's diluted pseudo archaeo astronomy 538 Barbelo 09-Aug-19 01:15
Re: Sweatman's diluted pseudo archaeo astronomy 557 Edmond 09-Aug-19 16:51
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 547 Eddie Larry 07-Aug-19 22:52
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 517 PB Bytes 08-Aug-19 20:50
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 608 Susan Doris 05-Aug-19 17:32
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 544 Martinsw1 05-Aug-19 20:23
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 531 Susan Doris 06-Aug-19 05:02
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 551 Edmond 07-Aug-19 13:23
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 559 Martinsw1 07-Aug-19 14:10
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 522 Susan Doris 07-Aug-19 15:07
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 538 drrayeye 08-Aug-19 04:15
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 516 Martinsw1 08-Aug-19 07:23
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 574 Merrell 08-Aug-19 08:29
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 512 drrayeye 08-Aug-19 17:27
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 572 Rebecca Bradley 08-Aug-19 15:21
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 551 PB Bytes 08-Aug-19 18:34
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 524 Rebecca Bradley 10-Aug-19 03:44
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 498 Susan Doris 10-Aug-19 05:34
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 515 Rebecca Bradley 10-Aug-19 05:57
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 505 PB Bytes 10-Aug-19 14:45
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 496 Corpuscles 10-Aug-19 22:37
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 504 PB Bytes 10-Aug-19 23:05
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 604 PB Bytes 11-Aug-19 15:56
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 503 Corpuscles 12-Aug-19 05:58
Props to Corps 479 PB Bytes 12-Aug-19 17:03
Great job! 506 drrayeye 12-Aug-19 18:01
Re: Welcoming Dr Martin Sweatman our featured NONSENSE author for August 2019 537 Corpuscles 09-Aug-19 01:50
Re: Welcoming Dr Martin Sweatman our featured NONSENSE author for August 2019 496 Susan Doris 09-Aug-19 06:30
Re: Welcoming Dr Martin Sweatman our featured NONSENSE author for August 2019 518 Rebecca Bradley 10-Aug-19 03:46
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 543 Martinsw1 09-Aug-19 07:14
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 528 Susan Doris 09-Aug-19 10:01
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 598 Martinsw1 09-Aug-19 10:40
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 511 Susan Doris 09-Aug-19 12:38
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 549 Martinsw1 09-Aug-19 13:07
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 612 unchartedxben 09-Aug-19 16:54
Plenty to talk about for thousands of years after the event! 498 greengirl5 10-Aug-19 01:29
Fall of a thousand suns 505 greengirl5 10-Aug-19 02:02
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 632 Rebecca Bradley 10-Aug-19 06:05
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 515 Eddie Larry 10-Aug-19 13:20
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 523 Rebecca Bradley 10-Aug-19 15:16
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 510 Eddie Larry 11-Aug-19 13:53
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 515 Martinsw1 11-Aug-19 19:42
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 513 PB Bytes 11-Aug-19 23:27
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 509 Martinsw1 12-Aug-19 08:49
A Sealed Deal? Of Course You Jest 503 Barbelo 12-Aug-19 21:16
Re: A Sealed Deal? Of Course You Jest 502 Martinsw1 13-Aug-19 10:28
Re: A Sealed Deal? Of Course You Jest 500 Martinsw1 13-Aug-19 18:18
Re: A Sealed Deal? Of Course You Jest 500 Barbelo 13-Aug-19 23:46
Re: A Sealed Deal? Of Course You Jest 505 PB Bytes 14-Aug-19 00:12
Re: A Sealed Deal? Of Course You Jest 501 Barbelo 14-Aug-19 04:03
Re: A Sealed Deal? Of Course You Jest 501 PB Bytes 14-Aug-19 14:26
Re: A Sealed Deal? Of Course You Jest 498 Barbelo 14-Aug-19 21:09
Re: A Sealed Deal? Of Course You Jest 492 PB Bytes 14-Aug-19 21:55
Re: A Sealed Deal? Of Course You Jest 490 PB Bytes 15-Aug-19 03:19
Re: A Sealed Deal? Of Course You Jest 510 Barbelo 15-Aug-19 04:28
Re: A Sealed Deal? Of Course You Jest 491 PB Bytes 15-Aug-19 14:24
Re: A Sealed Deal? Of Course You Jest 509 Eddie Larry 15-Aug-19 15:56
Re: A Sealed Deal? Of Course You Jest 528 PB Bytes 15-Aug-19 16:49
Re: A Sealed Deal? Of Course You Jest 501 Eddie Larry 15-Aug-19 18:35
The rest of us 527 drrayeye 15-Aug-19 19:28
Little stone in the middle of nowhere 496 greengirl5 15-Aug-19 23:05
Re: Little stone in the middle of nowhere 490 PB Bytes 15-Aug-19 23:19
Re: Little stone in the middle of nowhere 479 greengirl5 15-Aug-19 23:54
Re: Little stone in the middle of nowhere 496 greengirl5 16-Aug-19 00:14
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 579 Martinsw1 12-Aug-19 09:06
Re: Your scorpion or your Scorpius is back to front 584 Edmond 12-Aug-19 10:13
Re: Your scorpion or your Scorpius is back to front 518 Martinsw1 13-Aug-19 10:30
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 557 PB Bytes 12-Aug-19 14:21
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 505 Martinsw1 13-Aug-19 10:33
Constellation, or death-cult? 530 Merrell 13-Aug-19 06:55
Re: Constellation, or death-cult? 529 Martinsw1 13-Aug-19 10:44
Re: Constellation, or death-cult? 523 PB Bytes 13-Aug-19 18:46
Re: Constellation, or death-cult? 504 Martinsw1 14-Aug-19 08:40
Re: Constellation, or death-cult? 513 PB Bytes 14-Aug-19 14:11
Lost or last civilisation? 508 greengirl5 14-Aug-19 22:28
Re: Lost or last civilisation? 494 greengirl5 15-Aug-19 00:06
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 522 Rebecca Bradley 12-Aug-19 06:26
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 532 Martinsw1 12-Aug-19 08:56
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 514 Corpuscles 12-Aug-19 23:01
Planet destruction 488 greengirl5 13-Aug-19 00:04
Re: Planet destruction 502 Corpuscles 13-Aug-19 01:50
Re: Planet destruction 495 Eddie Larry 13-Aug-19 04:09
Re: Planet destruction 494 greengirl5 13-Aug-19 06:11
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 500 Susan Doris 13-Aug-19 05:01
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 537 Martinsw1 13-Aug-19 10:49
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 534 Rebecca Bradley 13-Aug-19 02:47
Composite animals 491 greengirl5 13-Aug-19 06:16
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 533 Martinsw1 13-Aug-19 11:02
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 537 Rebecca Bradley 14-Aug-19 06:56
Ibex or Feline? 520 greengirl5 14-Aug-19 08:40
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 585 Martinsw1 14-Aug-19 08:44
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 505 PB Bytes 14-Aug-19 14:09
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 527 Rebecca Bradley 15-Aug-19 04:36
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 522 Corpuscles 15-Aug-19 06:03
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 538 cloister 15-Aug-19 07:50
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 532 Martinsw1 16-Aug-19 08:25
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 535 PB Bytes 16-Aug-19 16:35
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 531 Rebecca Bradley 17-Aug-19 06:48
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 522 Martinsw1 17-Aug-19 07:59
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 529 Susan Doris 17-Aug-19 10:21
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 524 Rebecca Bradley 18-Aug-19 07:42
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 544 Martinsw1 18-Aug-19 08:17
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 549 Rebecca Bradley 18-Aug-19 09:08
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 528 Corpuscles 18-Aug-19 22:36
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 546 Martinsw1 19-Aug-19 08:24
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 491 Corpuscles 20-Aug-19 12:54
coming from a casual reader 504 drrayeye 20-Aug-19 14:20
Re: coming from a casual reader 493 Corpuscles 20-Aug-19 15:57
Re: coming from a casual reader 477 drrayeye 20-Aug-19 17:41
Re: coming from a casual reader 492 Corpuscles 20-Aug-19 20:18
280 million years 507 greengirl5 20-Aug-19 21:56
Re: 280 million years 485 Corpuscles 20-Aug-19 22:23
Re: 280 million years 480 greengirl5 21-Aug-19 06:41
Support for Mrs. O'Leary's "milk factory" (in song) 458 drrayeye 21-Aug-19 00:55
Re: coming from a casual gambler 450 Barbelo 20-Aug-19 21:36
Re: coming from a casual gambler 484 Corpuscles 20-Aug-19 21:46
Re: coming from a casual reader 462 Eddie Larry 21-Aug-19 00:03
Re: coming from a casual reader 462 Corpuscles 21-Aug-19 01:21
American joke 474 drrayeye 21-Aug-19 02:11
Re: coming from a casual reader 468 Eddie Larry 21-Aug-19 02:23
Re: coming from a casual reader 474 PB Bytes 20-Aug-19 16:32
Re: coming from a casual reader 447 drrayeye 20-Aug-19 17:46
Re: coming from a casual reader 465 PB Bytes 20-Aug-19 18:06
Re: coming from a casual reader 485 Corpuscles 20-Aug-19 20:33
Re: coming from a casual reader 460 PB Bytes 20-Aug-19 22:29
Re: coming from a casual reader 480 Corpuscles 20-Aug-19 22:52
Zodiacal Art & Precession 474 Barbelo 20-Aug-19 22:25
Re: Zodiacal Art & Precession 462 PB Bytes 21-Aug-19 04:36
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 497 PB Bytes 17-Aug-19 15:14
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 506 Rebecca Bradley 18-Aug-19 08:48
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 478 PB Bytes 18-Aug-19 16:38
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 467 Rebecca Bradley 20-Aug-19 07:53
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 469 Susan Doris 20-Aug-19 10:23
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 466 PB Bytes 20-Aug-19 19:36
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 479 Martinsw1 20-Aug-19 08:17
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 523 Rebecca Bradley 20-Aug-19 22:55
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 521 Corpuscles 20-Aug-19 23:16
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 524 Rebecca Bradley 22-Aug-19 06:48
The Test? 494 PB Bytes 21-Aug-19 15:59
Re: The Test? 479 Corpuscles 21-Aug-19 21:25
Re: The Test? 463 PB Bytes 21-Aug-19 21:58
Re: The Test? 494 Barbelo 21-Aug-19 22:05
Re: The Test? 477 Corpuscles 21-Aug-19 22:52
Re: The Test? 483 Rebecca Bradley 22-Aug-19 05:31
Re: The Test? 478 Barbelo 22-Aug-19 05:48
Re: The Test? 493 PB Bytes 22-Aug-19 14:21
Revising... The Test? 494 PB Bytes 22-Aug-19 16:48
animal anatomy lesson #1 503 hendrik dirker 22-Aug-19 19:02
Re: animal anatomy lesson #1 520 PB Bytes 22-Aug-19 19:06
Re: animal anatomy 488 hendrik dirker 24-Aug-19 06:09
Re: animal anatomy 558 PB Bytes 24-Aug-19 16:25
Re: Revising... The Test? 482 Rebecca Bradley 24-Aug-19 07:22
Re: Revising... The Test? 467 PB Bytes 24-Aug-19 15:30
Re: Revising... The Test? 467 Rebecca Bradley 31-Aug-19 06:03
Re: Revising... The Test? 460 PB Bytes 31-Aug-19 17:08
Re: Revising... The Test? 456 Eddie Larry 31-Aug-19 17:32
Re: Revising... The Test? 455 PB Bytes 31-Aug-19 19:52
Re: Revising... The Test? 460 Rebecca Bradley 01-Sep-19 04:03
Re: Revising... The Test? 437 PB Bytes 01-Sep-19 15:30
Re: Revising... The Test? 457 Eddie Larry 01-Sep-19 15:45
Re: Revising... The Test? 462 Rebecca Bradley 01-Sep-19 04:15
Research design perspective 490 drrayeye 14-Aug-19 22:21
Re: Research design perspective 456 Eddie Larry 14-Aug-19 22:43
Re: Research design perspective 478 Susan Doris 15-Aug-19 05:01
Re: Research design perspective 498 Martinsw1 15-Aug-19 07:08
Re: Research design perspective 474 PB Bytes 17-Aug-19 15:43
Re: Research design perspective 481 drrayeye 17-Aug-19 17:25
Re: Research design perspective 479 Martinsw1 18-Aug-19 08:00
Re: Research design perspective 462 drrayeye 18-Aug-19 21:42
Re: Research design perspective 487 Martinsw1 19-Aug-19 08:32
Re: Research design perspective 478 Corpuscles 19-Aug-19 22:32
Not Science, No Proof 509 Barbelo 18-Aug-19 22:44
Re: Not Science, No Proof 522 Martinsw1 19-Aug-19 08:35
Pomposity Levels Not Exceeded On This Board 483 Barbelo 19-Aug-19 11:03
Re: Pomposity Levels Not Exceeded On This Board 516 Martinsw1 20-Aug-19 08:58
Re: Pomposity Levels Not Exceeded On This Board 493 Barbelo 20-Aug-19 12:00
Earth orbital antics 520 hendrik dirker 20-Aug-19 18:39
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 552 Martinsw1 11-Aug-19 19:56
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 517 Corpuscles 12-Aug-19 06:12
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 539 Rebecca Bradley 12-Aug-19 06:42
individual subjectivity and objective consensus 555 PB Bytes 12-Aug-19 16:59
Re: individual subjectivity and objective consensus 517 Martinsw1 13-Aug-19 10:40
Other thoughts. 504 PB Bytes 13-Aug-19 16:32
Re: Other thoughts. 486 drrayeye 13-Aug-19 17:48
Re: Other thoughts. 507 PB Bytes 13-Aug-19 18:42
Re: Other thoughts. 498 drrayeye 13-Aug-19 19:06
Reading the book 496 greengirl5 13-Aug-19 22:40
Re: Reading the book 508 PB Bytes 14-Aug-19 03:11
Re: Other thoughts. 504 Corpuscles 14-Aug-19 01:20
Re: Other thoughts. 498 PB Bytes 14-Aug-19 02:51
Re: Other thoughts. 494 Eddie Larry 14-Aug-19 03:35
Re: Other thoughts. 470 PB Bytes 14-Aug-19 03:53
Re: Other thoughts. 490 Eddie Larry 14-Aug-19 17:54
Re: Other thoughts. 483 PB Bytes 14-Aug-19 19:02
Re: Other thoughts. 492 Eddie Larry 14-Aug-19 19:32
Re: Other thoughts. 479 PB Bytes 14-Aug-19 20:24
Re: Other thoughts. 498 Corpuscles 14-Aug-19 04:49
Re: Other thoughts. 498 Corpuscles 14-Aug-19 05:13
Re: Other thoughts. 493 PB Bytes 14-Aug-19 14:35
Dr. Sweatman, in case you didn't know... 567 PB Bytes 09-Aug-19 15:56
The Zodiac 503 hendrik dirker 10-Aug-19 12:00
Re: The Zodiac 529 PB Bytes 10-Aug-19 14:58
Scorpius, Orions belt, pareidolia 490 greengirl5 10-Aug-19 23:15
Re: Scorpius, Orions belt, pareidolia 477 PB Bytes 10-Aug-19 23:52
Re: Scorpius, Orions belt, pareidolia 492 greengirl5 11-Aug-19 00:07
Re: Scorpius, Orions belt, pareidolia 487 PB Bytes 11-Aug-19 00:20
Re: Scorpius, Orions belt, pareidolia 492 greengirl5 11-Aug-19 00:26
Just been outside to see Scorpius 501 greengirl5 11-Aug-19 11:40
Re: Just been outside to see Scorpius 482 greengirl5 11-Aug-19 12:51
Re: Just been outside to see Scorpius 513 Susan Doris 11-Aug-19 12:53
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 521 PB Bytes 12-Aug-19 14:18
Regarding the wider picture down the line 506 PB Bytes 14-Aug-19 16:47
Re: Regarding the wider picture down the line 557 Martinsw1 15-Aug-19 07:14
Re: Welcoming Dr Martin Sweatman our featured author for August 2019 546 Corpuscles 21-Aug-19 23:13
A new question 484 PB Bytes 01-Sep-19 17:25
Re: A new question 1025 Rebecca Bradley 02-Sep-19 04:20


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