APOD: Atlantis over Rhodes (2010 May 28)

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APOD: Atlantis over Rhodes (2010 May 28)

Post by APOD Robot » Fri May 28, 2010 4:09 am

Image Atlantis over Rhodes

Explanation: A moonlit chapel stands in the foreground of this night-scape from the historic Greek island of Rhodes. The tantalizing sky above features a colorful lunar corona, where bright moonlight is diffracted by water droplets in the thin clouds drifting in front of the lunar disk. Captured in the early evening on May 17, the image is a composite of 9 exposures in sequence, each 20 seconds long. It shows star trails too, including the very bright trail of planet Venus setting, below the Moon, near the right edge of the frame. Arcing from the horizon on the right to the picture's left edge is a surprisingly colorful trail produced by space shuttle orbiter Atlantis docked with the International Space Station. Some 350 kilometers above Earth's surface, the orbiter and station pair are still bathed in sunlight. Though it might seem more appropriate when seen in skies over Rhodes, the shuttle orbiter Atlantis wasn't directly named for the legendary island of Atlantis. Instead, it was named for 1930s vintage sailing ship RV Atlantis, the first research vessel operated by the Woods Hole Oceanographic Institute.

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Re: APOD: Atlantis over Rhodes (2010 May 28)

Post by orin stepanek » Fri May 28, 2010 4:40 am

The chapel looks somewhat out of shape. I wonder if that may be an artifact of the photo or it that is the architecture of the building?
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TJKelly

Re: APOD: Atlantis over Rhodes (2010 May 28)

Post by TJKelly » Fri May 28, 2010 7:26 am

What are the breaks in the ISS/Shuttle trail?

Tom in Michigan

Re: APOD: Atlantis over Rhodes (2010 May 28)

Post by Tom in Michigan » Fri May 28, 2010 11:40 am

TJKelly wrote:What are the breaks in the ISS/Shuttle trail?
I believe the breaks in the trail each come from the moment between successive exposures. This is a composite of nine photographs. You can see nine segments if you look carefully. At least one gap is hidden behind a portion of the chapel.

The description starts with "A moonlit chapel". I think that's somewhat incorrect. While the moon is out, the front side of the chapel would be in the shadow. Obviously, there's another light source in addition to the moon.

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Re: APOD: Atlantis over Rhodes (2010 May 28)

Post by bystander » Fri May 28, 2010 12:18 pm

orin stepanek wrote:The chapel looks somewhat out of shape. I wonder if that may be an artifact of the photo or it that is the architecture of the building?
I think what you are seeing is just an artifact of using a wide angle lens. If you do an image search on Google for "island rhodes chapel", you will find several of similar architecture.

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Re: APOD: Atlantis over Rhodes (2010 May 28)

Post by orin stepanek » Fri May 28, 2010 1:20 pm

bystander wrote:
orin stepanek wrote:The chapel looks somewhat out of shape. I wonder if that may be an artifact of the photo or it that is the architecture of the building?
I think what you are seeing is just an artifact of using a wide angle lens. If you do an image search on Google for "island rhodes chapel", you will find several of similar architecture.
Thanks! I thought that was the case; but I wasn't sure.
Orin

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Apollo over Rhodes

Post by neufer » Fri May 28, 2010 3:09 pm

[list][list]Gulliver's Travels by Jonathan Swift
Part I: A Voyage to Lilliput Chapter III.[/list]
<<The emperor...took a fancy of diverting himself in a very singular manner. He desired I would stand like a Colossus, with my legs as far asunder as I conveniently could. He then commanded his general (who was an old experienced leader, and a great patron of mine) to draw up the troops in close order, and march them under me; the foot by twenty-four abreast, and the horse by sixteen, with drums beating, colours flying, and pikes advanced. This body consisted of three thousand foot, and a thousand horse. His majesty gave orders, upon pain of death, that every soldier in his march should observe the strictest decency with regard to my person; which however could not prevent some of the younger officers from turning up their eyes as they passed under me: and, to confess the truth, my breeches were at that time in so ill a condition, that they afforded some opportunities for laughter and admiration.>>[/list]
http://en.wikipedia.org/wiki/Colossus_of_Rhodes wrote:
<<The Colossus of Rhodes was a statue of the Greek god Helios, erected in the city of Rhodes on the Greek island of Rhodes by Chares of Lindos between 292 and 280 BC. It is considered one of the Seven Wonders of the Ancient World. Before its destruction, the Colossus of Rhodes stood over 30 meters high, making it one of the tallest statues of the ancient world.

Alexander the Great died at the early age of 32 in 323 BC without having had time to put into place any plans for his succession. Fighting broke out among his generals, the Diadochi, with four of them eventually dividing up much of his empire in the Mediterranean area. During the fighting, Rhodes had sided with Ptolemy, and when Ptolemy eventually took control of Egypt, Rhodes and Ptolemaic Egypt formed an alliance which controlled much of the trade in the eastern Mediterranean.

Antigonus I Monophthalmus ("Antigonus the One-eyed") was upset by this turn of events. In 305 BC he had his son Demetrius Poliorcetes, also a general, invade Rhodes with an army of 40,000; however, the city was well defended, and Demetrius—whose name "Poliorcetes" signifies the "besieger of cities"—had to start construction of a number of massive siege towers in order to gain access to the walls. In 304 BC a relief force of ships sent by Ptolemy arrived, and Demetrius's army abandoned the siege, leaving most of their siege equipment. To celebrate their victory, the Rhodians sold the equipment left behind for 300 talents and decided to use the money to build a colossal statue of their patron god, Helios. Construction was left to the direction of Chares, a native of Lindos in Rhodes, who had been involved with large-scale statues before. His teacher, the sculptor Lysippos, had constructed a 22 meter (70 ft) high bronze statue of Zeus at Tarentum.

Ancient accounts, which differ to some degree, describe the structure as being built with iron tie bars to which brass plates were fixed to form the skin. Much of the iron and bronze was reforged from the various weapons Demetrius's army left behind, and the abandoned second siege tower was used for scaffolding around the lower levels during construction. After twelve years, in 280 BC, the statue was completed. Preserved in Greek anthologies of poetry is what is believed to be the genuine dedication text for the Colossus.

[list]To you, o Sun, the people of Dorian Rhodes set up this bronze statue reaching to Olympus, when they had pacified the waves of war and crowned their city with the spoils taken from the enemy. Not only over the seas but also on land did they kindle the lovely torch of freedom and independence. For to the descendants of Herakles belongs dominion over sea and land.[/list]The statue stood for only 56 years until Rhodes was hit by the 226 BC Rhodes earthquake. The statue snapped at the knees and fell over on to the land. Ptolemy III offered to pay for the reconstruction of the statue, but the oracle of Delphi made the Rhodians afraid that they had offended Helios, and they declined to rebuild it. The remains lay on the ground as described by Strabo (xiv.2.5) for over 800 years, and even broken, they were so impressive that many traveled to see them. Pliny the Elder remarked that few people could wrap their arms around the fallen thumb and that each of its fingers was larger than most statues.

In 654, an Arab force under Muslim caliph Muawiyah I captured Rhodes, and according to the chronicler Theophanes the Confessor, the remains were sold to a "Jewish merchant of Edessa". The buyer had the statue broken down, and transported the bronze scrap on the backs of 900 camels to his home. There is compelling evidence, however, that all traces of the Colossus had actually disappeared long before the Arab invasion. The stereotypical Arab destruction and the purported sale to a Jew probably originated as a powerful metaphor for Nebuchadnezzar's dream of the destruction of a great and awesome statue, and would have been understood by any seventh century monk as evidence for the coming apocalypse.

The harbor-straddling Colossus was a figment of medieval imaginations based on the dedication text's mention of "over land and sea" twice. Many older illustrations (above) show the statue with one foot on either side of the harbor mouth with ships passing under it: "...the brazen giant of Greek fame, with conquering limbs astride from land to land..." ("The New Colossus", a poem engraved on a bronze plaque and mounted inside the Statue of Liberty in 1903). Shakespeare's Cassius in Julius Caesar (I,ii,136–38) says of Caesar:

[list]Why man, he doth bestride the narrow world
Like a Colossus, and we petty men
Walk under his huge legs and peep about
To find ourselves dishonorable graves
[/list]
Image
Colossus of Rhodes, imagined in a 16th-century engraving by Martin Heemskerck.

Shakespeare alludes to the Colossus also in Troilus and Cressida (V.5) and in Henry IV, Part 1 (V.1).

While these fanciful images feed the misconception, the mechanics of the situation reveal that the Colossus could not have straddled the harbor as described in Lemprière's Classical Dictionary. If the completed statue straddled the harbor, the entire mouth of the harbor would have been effectively closed during the entirety of the construction; nor would the ancient Rhodians have had the means to dredge and re-open the harbor after construction. The statue fell in 224 BC: if it straddled the harbor mouth, it would have entirely blocked the harbor. Also, since the ancients would not have had the ability to remove the entire statue from the harbor, it would not have remained visible on land for the next 800 years, as discussed above. Even neglecting these objections, the statue was made of bronze, and an engineering analysis proved that it could not have been built with its legs apart without collapsing from its own weight.

Image
The Colossus of Rhodes depicted in 1880.

The design, posture and dimensions of the Statue of Liberty in New York Harbor are based on what the Colossus was thought by engineers in the late 19th century to have looked like. There is a famous reference to the Colossus in the poem "The New Colossus" by Emma Lazarus, written in 1883 and inscribed on a plaque located inside the pedestal of the Statue of Liberty:

[list]Not like the brazen giant of Greek fame,
With conquering limbs astride from land to land;
Here at our sea-washed, sunset gates shall stand
A mighty woman with a torch, whose flame
Is the imprisoned lightning, and her name
Mother of Exiles. From her beacon-hand
Glows world-wide welcome; her mild eyes command
The air-bridged harbor that twin cities frame.
"Keep, ancient lands, your storied pomp!" cries she
With silent lips. "Give me your tired, your poor,
Your huddled masses yearning to breathe free,
The wretched refuse of your teeming shore.
Send these, the homeless, tempest-tost to me,
I lift my lamp beside the golden door!"
[/list]
Art Neuendorffer

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Re: APOD: Atlantis over Rhodes (2010 May 28)

Post by Greyhawk101 » Sat May 29, 2010 12:52 am

Its really sad to see us slipping back technologically. We are supposed to be moving forward! I always thought it would be some armageddon that would drag us back from the stars but no, its just economics. A very very sad year indeed. The almighty damned economics as usual dragging everything back to the stone age. I couldnt believe it when the Concorde got shelved. I'm gobsmacked that NASA has cancelled the Shuttle. Star Trek got it right. Exploration for the sake of humanity unrestricted by the dollar or international strife. Maybe we should take a lesson from that show.

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Re: APOD: Atlantis over Rhodes (2010 May 28)

Post by neufer » Sat May 29, 2010 1:01 am

Greyhawk101 wrote:Its really sad to see us slipping back technologically. We are supposed to be moving forward! I always thought it would be some armageddon that would drag us back from the stars but no, its just economics. A very very sad year indeed. The almighty damned economics as usual dragging everything back to the stone age. I couldnt believe it when the Concorde got shelved. I'm gobsmacked that NASA has cancelled the Shuttle. Star Trek got it right. Exploration for the sake of humanity unrestricted by the dollar or international strife. Maybe we should take a lesson from that show.
  • ________ Scientific American JUNE 1960

    "Putting a man in space is a stunt: the man can do no more
    than an instrument, in fact can do less." So said Vannevar Bush,
    chairman of the Board of Governors of the Massachusetts Institute of
    Technology, in a statement to the House Committee on Science and
    Astronautics. "ŒThere are far more serious things to do than to indulge
    in stunts. As yet the American people do not understand the
    distinctions, and we in this country are prone to rush, for a time, at
    any new thing. I do not discard completely the value of demonstrating
    to the world our skills. Nor do I undervalue the effect on morale of
    the spectacular. But the present hullabaloo on the propaganda aspects
    of the program leaves me entirely cool."
Art Neuendorffer

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Re: APOD: Atlantis over Rhodes (2010 May 28)

Post by rstevenson » Sat May 29, 2010 12:17 pm

Greyhawk101 wrote:... I couldnt believe it when the Concorde got shelved. I'm gobsmacked that NASA has cancelled the Shuttle. ...
While I share your frustration, I can also see why these things are happening. The Concorde was, at best, a technology demonstration, and at worst a toy for the rich. If enough of them had been built to radically change air travel for the masses, we would now be damaging the atmosphere at an even greater rate, not to mention sonic-booming ourselves into deafness.

The Shuttle is very old technology, needs to be replaced, and is being replaced.

Humanity is reaching for the stars, haltingly and with much disagreement about priorities. Those who just want data argue (correctly, from their point of view) that unmanned projects can do the job. Those who want adventure at any cost argue for massive manned exploration. Both approaches will continue to be utilized, frustrating everyone, as is usual in human affairs.

Rob

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Re: APOD: Atlantis over Rhodes (2010 May 28)

Post by orin stepanek » Sat May 29, 2010 4:28 pm

Hasn't the shuttle replacement been cancelled by Obama?
http://www.foxnews.com/scitech/2010/02/ ... ange-nasa/
Orin

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