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How long is 641 parsecs?

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It's about 20,000,000,000,000,000 times as tall as Tugela Falls.
In other words, 641 parsecs is 20,900,000,000,000,000.00000000000000000000 times the height of Tugela Falls, and the height of Tugela Falls is 0.00000000000000004780 times that amount.
(Royal Natal National Park, KwaZulu-Natal, South Africa)
Tugela Falls rises to 0.00000000000003070 parsecs in height. The falls are the highest in Africa and the second highest in the world.
It's about 20,000,000,000,000,000 times as tall as Angel Falls.
In other words, 641 parsecs is 20,200,000,000,000,000.00000000000000000000 times the height of Angel Falls, and the height of Angel Falls is 0.00000000000000004950 times that amount.
(a.k.a. Parakupa-vena, a.k.a. Kerepakupai mer&) (Auyantepui, Canaima National Park, Venezuela) (total height)
Angel Falls has a total height 0.00000000000003170 parsecs. Jimmie Angel, the first person to publicize their existence outside Venezuela and the namesake of the falls, damaged his monoplane atop the falls and was forced to abandon it; it remained there until it was removed 33 years later.
It's about 400,000,000,000,000,000 times as tall as The Arc de Triomphe.
In other words, 641 parsecs is 400,000,000,000,000,000.00000000000000000000 times the height of The Arc de Triomphe, and the height of The Arc de Triomphe is 0.00000000000000000250 times that amount.
(Paris, France)
The Arc de Triomphe stands 0.00000000000000160 parsecs tall. France's Tomb of the Unknown Soldier from the First World War lies beneath the arch and is commemorated by the first eternal flame to have been lit in modern European history.
It's about 1,500,000,000,000,000,000 times as tall as a Brachiosaurus.
In other words, the height of a Brachiosaurus is 0.000000000000000000670 times 641 parsecs.
(based on comparable bone measurements, height to head)
Dinosaurs in the genus Brachiosaurus had an estimated height (at the head with neck fully extended) of up to 0.000000000000000420 parsecs. A resin cast of the first Brachiosaurus specimen, owned by the Field Museum in Chicago, is currently on display at the O'Hare International Airport.
It's about 85,000,000,000,000,000 times as tall as The Golden Gate Bridge.
In other words, 641 parsecs is 87,100,000,000,000,000.00000000000000000000 times the height of The Golden Gate Bridge, and the height of The Golden Gate Bridge is 0.00000000000000001150 times that amount.
(San Francisco, California and Marin County, California) (height above water)
The height of each tower of Golden Gate Bridge is 0.000000000000007360 parsecs above the surface of the San Francisco Bay. One of the key designers of the bridge, Charles Ellis, had no engineering degree when he began working on the project, but would later go on to write what became a standard textbook on structural engineering, and would ultimately be forced to complete his calculations on the bridge by working without pay for five months.
It's about 150,000,000,000,000,000 times as tall as The Great Pyramid of Giza.
In other words, the height of The Great Pyramid of Giza is 0.00000000000000000670 times 641 parsecs.
(a.k.a. Pyramid of Khufu, a.k.a. Pyramid of Cheops) (Cairo, Egypt) (estimated original height)
The Great Pyramid of Giza has an estimated original height (without loss due to erosion) of 0.00000000000000420 parsecs. The Pyramid was the tallest structure in the world for almost 4,000 years — from its construction ca. 2551 BCE until it was overtaken by the Lincoln Cathedral in Lincoln, England, built in the year 1300.
It's about 45,000,000,000,000,000 times as tall as The Petronas Twin Towers.
In other words, 641 parsecs is 43,770,000,000,000,000.000000000000000000000 times the height of The Petronas Twin Towers, and the height of The Petronas Twin Towers is 0.000000000000000022850 times that amount.
(a.k.a. Menara Berkembar Petronas, a.k.a. Petronas Towers) (Kuala Lumpur, Malaysia) (to spire)
Each of the Petronas Towers stands 0.000000000000014650 parsecs to their spires. Holding the record as the tallest buildings in the world from 1998 to 2004, the towers continue to hold the record for the deepest foundation barrettes — up to 0.0000000000000037270 parsecs deep.