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Exact Date Pinned to Great Pyramid's Construction?
National Geographic News ^ | 21 Sep 2009 | Andrew Bossone

Posted on 09/21/2009 6:26:02 PM PDT by BGHater

The Egyptians started building the Great Pyramid of Giza on August 23, 2470 B.C., according to controversial new research that attempts to place an exact date on the start of the ancient construction project.

A team of Egyptian researchers arrived at the date based on calculations of historical appearances of the star Sothis—today called Sirius.

Every year around the time of the Nile River floods, Sothis would rise in the early morning sky after a long absence.

"The appearance of this star indicates the beginning of an inundation period" for the Nile, said team leader Abdel-Halim Nur El-Din, former head of Egypt's Supreme Council of Antiquities.

Throughout their history, "Egyptians … started their main buildings, the tombs, and the temples at the beginning of the inundation"—an auspicious time, since floodwaters brought fresh soil, maintaining the region's fertility.

In addition, pharaohs always started building their tombs at the starts of their rules. Khufu, the pharaoh meant to be buried in the Great Pyramid, took power in 2470 B.C., according to Nur El-Din and colleagues.

The researchers therefore compared the modern calendar, the ancient Egyptian calendar, and the cycle of the star to find the exact day Sothis would have appeared that year.

The team believes the ancient Egyptians observed the star from July 17 to 19, and the inundation period began 35 days later—on August 23.

(Related: "Great Pyramid Built Inside Out, French Architect Says.")

Pharaohs Reset the Clock

Using Sothis's arrival to keep track of the annual Nile floods made sense, said Mark Hammergren, an astronomer at the Adler Planetarium in Chicago who was not involved in the work.

"It happens at about the same time every solar year, so it corresponds to the seasons, and it provides them a good fixed date," he said.

Hammergren agrees with the days Nur El-Din's team calculated for Sothis, based on other researchers' estimates for the dates the star would have risen during ancient Egyptian times.

Still, Hammergren noted, the "appearance" of the star is subject to weather conditions, which might have obscured its first rise in any given year.

Mahmoud Afifi, the general director of Giza antiquities, is also concerned about placing an exact year on the start of Khufu's rule.

Ancient Egyptian chronology reset to zero at the beginning of each pharaoh's reign, making it difficult to match Western calendar years with the dates given for ancient events.

What's more, dated lists of kings are unreliable, since the ancient Egyptians often had political motivations to alter the historical record.

Some unpopular pharaohs could have been left off the lists, for example, which would have changed the ruling dates of every pharaoh that followed.

Many scholars debate the precise year Khufu ascended to the throne, with some estimates as much as 139 years earlier than the date Nur El-Din and his team selected.

In addition, the design of the monumental Great Pyramid probably took considerable time to prepare, Afifi said, which might have delayed the start of construction beyond the first year of Khufu's reign.

Pyramid Mysteries

For Afifi, many aspects of the Great Pyramid simply remain shrouded in mystery. (Explore an Egyptian pyramids interactive.)

"We don't even know why [Khufu] chose the Giza plateau for his tomb, when his father was in Dashur, 30 kilometers [18.6 miles] away," he said.

"There're a lot of theories about the Great Pyramid, because it is the last [surviving ancient] wonder of the world."


TOPICS: History; Science
KEYWORDS: bishopussher; egypt; giza; godsgravesglyphs; khufu; nile; pyramid; science; sirius; sothis
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1 posted on 09/21/2009 6:26:02 PM PDT by BGHater
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To: SunkenCiv

August 23, 2470 B.C ping. This is pretty Sirius, dunno if Zahi signed off on the date.


2 posted on 09/21/2009 6:27:06 PM PDT by BGHater (Insanity is voting for Republicans and expecting Conservatism.)
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To: BGHater
The Egyptians started building the Great Pyramid of Giza on August 23, 2470 B.C. . . .

About tea time.

3 posted on 09/21/2009 6:34:17 PM PDT by Oatka ("A society of sheep must in time beget a government of wolves." –Bertrand de Jouvenel)
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To: BGHater
according to controversial new research that attempts to place an exact date on the start of the ancient construction project.

What was really shocking was the tag they found on the other side

Image and video hosting by TinyPic

4 posted on 09/21/2009 6:37:16 PM PDT by txroadkill ( 9/12/2009 another win for the Gipper!)
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To: BGHater

pretty dogon sirius!

http://www.unmuseum.org/siriusb.htm


5 posted on 09/21/2009 6:43:11 PM PDT by silverleaf (If we are astroturf, why are the democrats trying to mow us?)
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To: BGHater
The Egyptians started building the Great Pyramid of Giza on August 23, 2470 B.C.,

Not likely, it was raining that day.

6 posted on 09/21/2009 6:53:50 PM PDT by SampleMan (Socialism enslaves you & kills your soul.)
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To: BGHater
http://www.amazon.com/dp/006165552X/?tag=yahhyd-20&hvadid=45457888511&ref=pd_sl_52p68ssd56_e

Great book about an interior ramp used to build Khufu's pyramid. Recommended

7 posted on 09/21/2009 7:16:56 PM PDT by atc23
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To: BGHater
Mostly the archaeologist's depended on an inscription that said;

“This pyramid erected 2470 B.C.”

8 posted on 09/21/2009 7:26:02 PM PDT by count-your-change (You don't have be brilliant, not being stupid is enough.)
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To: BGHater

I never believe anything the Egyptians say about the pyramids. Like OBamBam, they always have an angle.


9 posted on 09/21/2009 7:26:09 PM PDT by webschooner (First they ignore you, then they laugh at you, then they fight you, then you win -- Mahatma Gandhi)
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To: BGHater

Te Sothic Cycles have been discredited and refuted any number of times. Interesting they would go back to this old saw.


10 posted on 09/21/2009 8:10:03 PM PDT by LiteKeeper (When do the impeachment proceedings begin?)
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To: BGHater; StayAt HomeMother; Ernest_at_the_Beach; 1ofmanyfree; 21twelve; 24Karet; 2ndDivisionVet; ...

· join list or digest · view topics · view or post blog · bookmark · post a topic · subscribe ·

 
Gods
Graves
Glyphs
Thanks BGHater. Somewhere around here there's a topic (I think) regarding an earlier recent attempt at an exact date for its construction, based on astronomical retrocalculation.

To all -- please ping me to other topics which are appropriate for the GGG list.
GGG managers are SunkenCiv, StayAt HomeMother, and Ernest_at_the_Beach
 

·Dogpile · Archaeologica · ArchaeoBlog · Archaeology · Biblical Archaeology Society ·
· Discover · Nat Geographic · Texas AM Anthro News · Yahoo Anthro & Archaeo · Google ·
· The Archaeology Channel · Excerpt, or Link only? · cgk's list of ping lists ·


11 posted on 09/21/2009 8:50:14 PM PDT by SunkenCiv (https://secure.freerepublic.com/donate/__Since Jan 3, 2004__Profile updated Monday, January 12, 2009)
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To: BGHater
How Do We Know What Happened?
12 posted on 09/21/2009 8:53:48 PM PDT by LiteKeeper (When do the impeachment proceedings begin?)
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To: SampleMan

Not likely that it was raining in Egypt in August.
Maybe no work if union contract reads: “No manual labor if temperature exceeds 110ºF before 12:00 PM.”


13 posted on 09/21/2009 8:58:28 PM PDT by TaMoDee
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To: SunkenCiv

Gregorian or Julian? :D


14 posted on 09/21/2009 10:21:56 PM PDT by rdl6989
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To: TaMoDee
Not likely that it was raining in Egypt in August.

It was a lot wetter in North Africa 4500 years ago.

15 posted on 09/22/2009 5:01:53 AM PDT by SampleMan (Socialism enslaves you & kills your soul.)
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To: BGHater

I think it was Aliens

Can you imagine the manpower it would have taken to cut and haul these stones by hand? And the food to feed them and the housing?

What kind of an economy could support that kind of busywork?

And wouldn’t at least one of them say “why are we moving these big friggin’ rocks into a pile? I have children to feed”


16 posted on 09/22/2009 5:42:28 AM PDT by Mr. K (THIS ADMINISTRATION IS WEARING OUT MY CAPSLOCK KEY DAMMIT DAMMIT DAMMIT!!!!!)
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To: SampleMan

Thanks, You may be right. I’ll do some research on the climate at that Lat and time frame. I think I saw an article in the dim dark past that had quite a bit of info.
The fact remains though that the climate was dry and that
was one of the reasons that the mummies stayed in just great condition. August would be a dry month and then again a TS could have occurred to support your statement of rain.


17 posted on 09/22/2009 8:43:57 AM PDT by TaMoDee
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To: TaMoDee

Well, it was an unusual autumn in 2470 B.C. I believe the high was only 87 degrees F on August 23rd.


18 posted on 09/22/2009 10:11:26 AM PDT by SampleMan (Socialism enslaves you & kills your soul.)
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To: SunkenCiv; BGHater
When Siruius appeared they could hear Howard Sternakamon.
19 posted on 09/22/2009 1:24:46 PM PDT by colorado tanker (Barack Obama is an old Kenyan word for Jimmy Carter)
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To: BGHater

This is HUGH and SIRIUS!


20 posted on 09/22/2009 4:19:17 PM PDT by lexington minuteman 1775
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