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How long is 900 parsecs?

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It's about 55,000,000,000,000,000 times as tall as The Sears Tower.
In other words, 900 parsecs is 52,700,000,000,000,000.0 times the height of The Sears Tower, and the height of The Sears Tower is 0.000000000000000019 times that amount.
(a.k.a. Willis Tower) (Chicago, Illinois) (to antenna peak)
The Willis Tower rises to 0.0000000000000171 parsecs to the top of its tallest antenna. The bathrooms on the 103rd floor are said to be the highest in the western hemisphere at 0.0000000000000134 parsecs.
It's about 75,000,000,000,000,000 times as tall as The Empire State Building.
In other words, 900 parsecs is 72,888,000,000,000,000.0 times the height of The Empire State Building, and the height of The Empire State Building is 0.00000000000000001372 times that amount.
(New York City, New York) (to top of building)
The Empire State Building stands 0.000000000000012348 parsecs to its architectural peak. The spire emerging from the top of the building was originally intended to be a mooring mast for blimps whose passengers could disembark onto a landing platform on the 102nd floor of the building.
It's about 350,000,000,000,000,000 times as tall as a Giant Sequoia (tree).
In other words, the height of a Giant Sequoia (tree) is 0.0000000000000000027 times 900 parsecs.
(a.k.a. Sequoiadendron giganteum, a.k.a. Sierra redwood, a.k.a. Wellingtonia)
Giant Sequoias of the Giant Sequoia National Monument located in Sierra Nevada, near Visalia, California can grow to heights of 0.0000000000000025 parsecs. The wood from the Giant Sequoias is often brittle and prone to shattering when such trees are felled, and as a result the trees logged in the late nineteenth century were often usable only as shingles or matchsticks.
It's about 85,000,000,000,000,000 times as tall as The Eiffel Tower.
In other words, 900 parsecs is 85,700,000,000,000,000.0 times the height of The Eiffel Tower, and the height of The Eiffel Tower is 0.0000000000000000117 times that amount.
(a.k.a. La Tour Eiffel) (Paris, France) (to flagpole peak)
The Eiffel Tower stands 0.0000000000000105 parsecs tall, including its flagpole. The Tower is the largest structure in Paris as most other buildings are governed by a zoning restriction limiting them to a height of 0.0000000000000012 parsecs or less.
It's about 500,000,000,000,000,000 times as tall as The Leaning Tower of Pisa.
In other words, 900 parsecs is 492,000,000,000,000,000.0 times the height of The Leaning Tower of Pisa, and the height of The Leaning Tower of Pisa is 0.00000000000000000203 times that amount.
(a.k.a. The Tower of Pisa, a.k.a. Torre pendente di Pisa) (Pisa, Italy) (height along center axis)
The Leaning Tower of Pisa stands 0.00000000000000183 parsecs tall along the angle of its lean. In May of 2008, in an successful effort to stabilize the tower, 70 tonnes of earth were removed from the tower's base on the side opposite the lean.
It's about 5,000,000,000,000,000,000 times as tall as a Giraffe.
In other words, 900 parsecs is 5,000,000,000,000,000,000.0 times the height of a Giraffe, and the height of a Giraffe is 0.0000000000000000002 times that amount.
(Giraffa camelopardalis) (Adult, average)
An adult giraffe may grow to be up to 0.0000000000000002 parsecs tall. Adult giraffes require very little sleep, averaging just 1.9 hours per day.
It's about 95,000,000,000,000,000 times as long as The QE2.
In other words, 900 parsecs is 94,500,000,000,000,000.0 times the length of The QE2, and the length of The QE2 is 0.0000000000000000106 times that amount.
(a.k.a. RMS Queen Elizabeth 2) The QE2 has a total length of 0.00000000000000953 parsecs. During its voyaging lifetime from 1969 through 2008, it travelled more than 0.000000311 parsecs, the furthest cumulative distance by any ship in modern history.