Science & Space :  The Official GrahamHancock.com forums
For all that is Scientifically related to Cosmology and Space. (NB: Please take discussions about UFOs, possible Alien contact, Crop-Circles, Alien Abductions, Planet-X and Niburu to the ‘Paranormal and Supernatural’ Message Board). 
Welcome! Log InRegister
To quote from my own book on the subject of Ptolemy, Copernicus and Venus:

In the first century CE, Greek mathematician, astronomer, geographer,
and astrologer Ptolemy made detailed observations of the risings
and settings of Venus that are at odds with our current experience. In
support of Velikovsky’s view, a 2002 article by Hugh Thurston titled
“Unveiling Venus” seeks to resolve the seemingly untenable differences
between Ptolemy’s observations of the motions of Venus and those
known to be true today. He writes, “Several writers have suggested that
Ptolemy adjusted (or even fabricated) his observations [of Venus]. In
particular, Swerdlow wrote that Ptolemy ‘could not have observed some
of the reported elongations’ (he certainly could not have observed two
MMEs [maximum mean elongations] 37 days apart).”

Dennis W. Duke, a professor of physics at Florida State University,
writes in a 2002 article titled “The Ancient Values of the Planetary
Parameters of Venus and Mercury,” “It is certainly the case that for
Venus, and only for Venus, Ptolemy presents an analysis that . . . needs
to be resolved.”

As late as the early 1500s, significant differences are noted in the
astronomic observations of Venus, even when given by well-respected
astronomic luminaries of the day. For example, it is reported that
Copernicus, who famously established the heliocentric model of the
solar system, calculated the sidereal period of Venus to be nine months
(270 days) instead of seven and one-half months (225 days). Such errors,
which are often seen by modern astronomers to be inexplicable, might
make sense if Velikovsky’s view that Venus was out of its orbit were
true.

As we might also expect based on Velikovsky’s scenario in which the
orbit of Venus may have been in flux, there are also significant contradic-
tions to be found between Ptolemy’s observations of Venus in the first
century CE and those of Copernicus fourteen centuries later. Venus, as a
planet that reflects the light of the sun that is shone on it, moves through
apparent phases when viewed from Earth, similar to the familiar phases
of the moon. Such phases could appear significantly different to us for
different bodies, depending on the specific relationship of that body in
space to Earth and the sun. Both Ptolemy and Copernicus produced
drawings that purported to diagram or predict the various phases of
Venus. However, Lewis A. Riley, a professor in the Department of Physics
and Astronomy at Ursinus College, wrote in 2004:

"The phase of a planet or moon depends on its position relative both
to the Sun and the observer. Hence, any model of the solar system
can be used to make predictions regarding the phases of the planets
and moons. From our perspective on Earth, Mercury and Venus are
inner planets. That is, they are closer to the Sun than we are. The
Ptolemaic and Copernican models of the solar system make different
and incompatible predictions regarding the phases of the inner
planets viewed from Earth. Hence, observations of the phases of the
inner planets lead us to reject one or both of these models."


- Laird



Edited 1 time(s). Last edit at 31-Oct-15 04:00 by Laird Scranton.

Options: ReplyQuote


Subject Views Written By Posted
More comet evidence in support of Velikovsky 1867 Laird Scranton 28-Oct-15 23:02
Re: More comet evidence in support of Velikovsky 420 OCaptain 28-Oct-15 23:09
Re: More comet evidence in support of Velikovsky 298 carolb 28-Oct-15 23:12
Re: More comet evidence in support of Velikovsky 406 Laird Scranton 28-Oct-15 23:51
Re: More comet evidence in support of Velikovsky 294 Laird Scranton 28-Oct-15 23:42
Re: More comet evidence in support of Velikovsky 282 carolb 28-Oct-15 23:49
Re: More comet evidence in support of Velikovsky 265 Laird Scranton 29-Oct-15 00:42
Re: More comet evidence in support of Velikovsky 333 laughin 29-Oct-15 16:29
Re: More comet evidence in support of Velikovsky 325 Starbinder 29-Oct-15 17:42
Re: More comet evidence in support of Velikovsky 269 OCaptain 29-Oct-15 18:08
Re: More comet evidence in support of Velikovsky 232 laughin 29-Oct-15 18:49
Re: More comet evidence in support of Velikovsky 252 OCaptain 29-Oct-15 23:13
Re: More comet evidence in support of Velikovsky 255 laughin 31-Oct-15 15:26
Re: More comet evidence in support of Velikovsky 282 drrayeye 31-Oct-15 16:49
Re: More comet evidence in support of Velikovsky 216 OCaptain 31-Oct-15 16:58
Re: More comet evidence in support of Velikovsky 230 laughin 31-Oct-15 18:24
Re: More comet evidence in support of Velikovsky 224 OCaptain 31-Oct-15 19:07
Re: More comet evidence in support of Velikovsky 244 laughin 01-Nov-15 03:12
Re: More comet evidence in support of Velikovsky 256 Laird Scranton 01-Nov-15 05:37
Re: More comet evidence in support of Velikovsky 296 laughin 01-Nov-15 16:16
Re: More comet evidence in support of Velikovsky 197 Laird Scranton 01-Nov-15 16:31
Re: More comet evidence in support of Velikovsky 234 Aine 30-Oct-15 14:06
Re: More comet evidence in support of Velikovsky 218 laughin 30-Oct-15 14:53
Re: More comet evidence in support of Velikovsky 295 Aine 30-Oct-15 15:35
Re: More comet evidence in support of Velikovsky 233 carolb 30-Oct-15 15:36
Re: More comet evidence in support of Velikovsky 246 laughin 30-Oct-15 18:55
Re: More comet evidence in support of Velikovsky 264 Laird Scranton 30-Oct-15 16:44
Re: More comet evidence in support of Velikovsky 310 Aine 30-Oct-15 17:04
Re: More comet evidence in support of Velikovsky 256 carolb 30-Oct-15 17:21
Re: More comet evidence in support of Velikovsky 192 Laird Scranton 30-Oct-15 18:47
Re: More comet evidence in support of Velikovsky 241 laughin 30-Oct-15 18:44
Re: More comet evidence in support of Velikovsky 232 Laird Scranton 29-Oct-15 19:46
Re: More comet evidence in support of Velikovsky 250 laughin 29-Oct-15 20:48
Re: More comet evidence in support of Velikovsky 242 Laird Scranton 29-Oct-15 22:07
Re: More comet evidence in support of Velikovsky 226 carolb 29-Oct-15 22:24
Re: More comet evidence in support of Velikovsky 238 Starbinder 30-Oct-15 00:46
Re: More comet evidence in support of Velikovsky 236 Laird Scranton 30-Oct-15 01:01
Re: More comet evidence in support of Velikovsky 331 Aine 30-Oct-15 14:11
Re: More comet evidence in support of Velikovsky 232 Laird Scranton 30-Oct-15 15:42
Re: More comet evidence in support of Velikovsky 346 carolb 30-Oct-15 16:32
Re: More comet evidence in support of Velikovsky 211 Laird Scranton 30-Oct-15 16:51
Re: More comet evidence in support of Velikovsky 232 carolb 30-Oct-15 16:57
Re: More comet evidence in support of Velikovsky 192 Laird Scranton 30-Oct-15 17:02
Re: More comet evidence in support of Velikovsky 317 carolb 30-Oct-15 17:20
Re: More comet evidence in support of Velikovsky 202 OCaptain 30-Oct-15 20:07
Re: More comet evidence in support of Velikovsky 193 Laird Scranton 30-Oct-15 20:37
Re: More comet evidence in support of Velikovsky 283 OCaptain 31-Oct-15 00:51
Re: More comet evidence in support of Velikovsky 201 OCaptain 30-Oct-15 20:06
Re: More comet evidence in support of Velikovsky 246 Laird Scranton 30-Oct-15 20:34
Re: More comet evidence in support of Velikovsky 298 carolb 30-Oct-15 20:47
Re: More comet evidence in support of Velikovsky 191 Laird Scranton 30-Oct-15 21:09
Re: More comet evidence in support of Velikovsky 225 carolb 30-Oct-15 23:23
Re: More comet evidence in support of Velikovsky 217 Laird Scranton 31-Oct-15 00:49
Re: More comet evidence in support of Velikovsky 214 carolb 31-Oct-15 01:01
Re: More comet evidence in support of Velikovsky 184 Laird Scranton 31-Oct-15 01:10
Re: More comet evidence in support of Velikovsky 329 carolb 31-Oct-15 01:38
Re: More comet evidence in support of Velikovsky 186 Laird Scranton 31-Oct-15 02:56
Re: More comet evidence in support of Velikovsky 209 Laird Scranton 31-Oct-15 03:58
Re: More comet evidence in support of Velikovsky 295 carolb 31-Oct-15 12:01
Re: More comet evidence in support of Velikovsky 203 Laird Scranton 31-Oct-15 15:19
Re: More comet evidence in support of Velikovsky 190 Laird Scranton 31-Oct-15 15:47
Re: More comet evidence in support of Velikovsky 248 Laird Scranton 31-Oct-15 16:02
Re: More comet evidence in support of Velikovsky 218 Laird Scranton 31-Oct-15 18:26
Re: More comet evidence in support of Velikovsky 253 Laird Scranton 31-Oct-15 21:48
Re: More comet evidence in support of Velikovsky 198 Laird Scranton 01-Nov-15 00:27
Re: More comet evidence in support of Velikovsky 214 carolb 01-Nov-15 01:00
Re: More comet evidence in support of Velikovsky 218 Laird Scranton 01-Nov-15 01:36
Re: More comet evidence in support of Velikovsky 270 skakos 03-Nov-15 09:51
Conspiracy... 205 skakos 03-Nov-15 11:19
Re: More comet evidence in support of Velikovsky 193 OCaptain 30-Oct-15 20:02
Re: More comet evidence in support of Velikovsky 289 Laird Scranton 30-Oct-15 20:30
Re: More comet evidence in support of Velikovsky 183 OCaptain 31-Oct-15 00:56
Re: More comet evidence in support of Velikovsky 210 Laird Scranton 31-Oct-15 02:04
Re: More comet evidence in support of Velikovsky 194 OCaptain 31-Oct-15 12:14
Re: More comet evidence in support of Velikovsky 207 Laird Scranton 31-Oct-15 15:41
Re: More comet evidence in support of Velikovsky 162 OCaptain 31-Oct-15 20:03
Re: More comet evidence in support of Velikovsky 206 Laird Scranton 31-Oct-15 21:26
Re: More comet evidence in support of Velikovsky 201 OCaptain 01-Nov-15 12:10
Re: More comet evidence in support of Velikovsky 210 drrayeye 01-Nov-15 13:50
Re: More comet evidence in support of Velikovsky 235 carolb 01-Nov-15 15:11
Re: More comet evidence in support of Velikovsky 212 drrayeye 01-Nov-15 16:52
Re: More comet evidence in support of Velikovsky 218 Laird Scranton 01-Nov-15 16:56
Re: More comet evidence in support of Velikovsky 261 carolb 01-Nov-15 17:14
Re: More comet evidence in support of Velikovsky 190 Laird Scranton 01-Nov-15 18:27
Re: More comet evidence in support of Velikovsky 201 drrayeye 01-Nov-15 21:57
Re: More comet evidence in support of Velikovsky 173 Laird Scranton 01-Nov-15 16:03
Re: More comet evidence in support of Velikovsky 212 OCaptain 01-Nov-15 19:35
Re: More comet evidence in support of Velikovsky 299 Laird Scranton 01-Nov-15 20:34
Re: More comet evidence in support of Velikovsky 218 Starbinder 30-Oct-15 19:27
Re: More comet evidence in support of Velikovsky 248 carolb 30-Oct-15 20:01
Re: More comet evidence in support of Velikovsky 196 laughin 30-Oct-15 20:17
Re: More comet evidence in support of Velikovsky 221 Starbinder 30-Oct-15 20:24
Re: More comet evidence in support of Velikovsky 257 carolb 30-Oct-15 20:46
Re: More comet evidence in support of Velikovsky 265 Starbinder 30-Oct-15 21:14
Re: More comet evidence in support of Velikovsky 222 carolb 30-Oct-15 23:11
Re: More comet evidence in support of Velikovsky 199 Starbinder 31-Oct-15 01:05
Re: More comet evidence in support of Velikovsky 210 Starbinder 02-Nov-15 19:40
Re: More comet evidence in support of Velikovsky 241 carolb 02-Nov-15 21:21
Re: More comet evidence in support of Velikovsky 209 Starbinder 06-Nov-15 14:53
Re: More comet evidence in support of Velikovsky 356 carolb 06-Nov-15 15:16
Re: More comet evidence in support of Velikovsky 204 Starbinder 06-Nov-15 18:50
Re: More comet evidence in support of Velikovsky 216 carolb 06-Nov-15 20:10
What about scientism? 222 drrayeye 07-Nov-15 08:19
Re: What about scientism? 226 carolb 07-Nov-15 12:59
Re: What about scientism? 255 OCaptain 07-Nov-15 13:55
Re: What about scientism? 312 carolb 07-Nov-15 17:37
Re: What about scientism? 244 drrayeye 07-Nov-15 19:55
"Blue sky thinking" 238 randompHactor 07-Nov-15 20:15
Re: What about scientism? 227 carolb 07-Nov-15 20:41
Re: What about scientism? 210 drrayeye 07-Nov-15 23:36
Re: What about scientism? 200 carolb 07-Nov-15 23:45
Re: What about scientism? 248 laughin 09-Nov-15 02:51
Re: More comet evidence in support of Velikovsky 349 laughin 30-Oct-15 15:03
Re: More comet evidence in support of Velikovsky 319 OCaptain 29-Oct-15 23:20
Re: More comet evidence in support of Velikovsky 452 Laird Scranton 29-Oct-15 23:51
SUMMARY? 229 skakos 02-Nov-15 21:33
Mod Note > skakos – Switch View 233 Dr. Troglodyte 02-Nov-15 22:33
Re: SUMMARY? 328 Laird Scranton 02-Nov-15 23:22
Re: More comet evidence in support of Velikovsky 335 Laird Scranton 29-Oct-15 19:32
Re: More comet evidence in support of Velikovsky 183 Laird Scranton 02-Nov-15 16:53
Re: More comet evidence in support of Velikovsky 310 drrayeye 02-Nov-15 19:52
Re: More comet evidence in support of Velikovsky 165 Laird Scranton 02-Nov-15 21:02
Re: More comet evidence in support of Velikovsky 283 Laird Scranton 03-Nov-15 14:44
Re: More comet evidence in support of Velikovsky 171 drrayeye 03-Nov-15 16:09
Re: More comet evidence in support of Velikovsky 201 OCaptain 03-Nov-15 18:32
Re: More comet evidence in support of Velikovsky 196 Laird Scranton 03-Nov-15 18:46
Re: More comet evidence in support of Velikovsky 348 laughin 03-Nov-15 19:28
Re: More comet evidence in support of Velikovsky 174 laughin 03-Nov-15 19:02
Re: More comet evidence in support of Velikovsky 232 Laird Scranton 03-Nov-15 21:02
Re: More comet evidence in support of Velikovsky 200 Laird Scranton 03-Nov-15 04:58
Re: More comet evidence in support of Velikovsky 215 Ratcho 03-Nov-15 06:18
Re: More comet evidence in support of Velikovsky 186 Laird Scranton 03-Nov-15 14:30
Regarding myths... 207 skakos 03-Nov-15 11:46
Re: Regarding myths... 198 Laird Scranton 03-Nov-15 17:00
Re: off topic... 183 Ratcho 03-Nov-15 20:15
Re: More comet evidence in support of Velikovsky 266 skakos 04-Nov-15 13:28
Re: More comet evidence in support of Velikovsky 210 skakos 04-Nov-15 15:07
Re: More comet evidence in support of Velikovsky 194 skakos 04-Nov-15 15:11
Re: More comet evidence in support of Velikovsky 673 skakos 04-Nov-15 22:22
Re: More comet evidence in support of Velikovsky 330 Laird Scranton 05-Nov-15 01:11
Re: More comet evidence in support of Velikovsky 206 skakos 05-Nov-15 14:10
Re: More comet evidence in support of Velikovsky 206 Laird Scranton 05-Nov-15 14:23
Re: More comet evidence in support of Velikovsky 304 skakos 05-Nov-15 19:32
Re: More comet evidence in support of Velikovsky 194 Laird Scranton 05-Nov-15 19:42
Re: More comet evidence in support of Velikovsky 294 Laird Scranton 04-Nov-15 21:23
Cosmic Disconnect 213 laughin 06-Nov-15 15:00
Re: Cosmic Disconnect 169 OCaptain 07-Nov-15 13:49
Re: More comet evidence in support of Velikovsky 381 skakos 16-Nov-15 12:46
Re: More comet evidence in support of Velikovsky 301 OCaptain 16-Nov-15 13:54
Re: More comet evidence in support of Velikovsky 329 skakos 16-Nov-15 15:36
Re: More comet evidence in support of Velikovsky 395 OCaptain 17-Nov-15 01:23
Re: More comet evidence in support of Velikovsky 324 skakos 18-Nov-15 18:32
Re: More comet evidence in support of Velikovsky 346 Ratcho 18-Nov-15 18:45
Re: More comet evidence in support of Velikovsky 291 OCaptain 19-Nov-15 00:49
Re: More comet evidence in support of Velikovsky 369 skakos 19-Nov-15 07:24
Re: More comet evidence in support of Velikovsky 508 skakos 27-Dec-15 22:04


Sorry, only registered users may post in this forum.