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To put in perspective the size of a googol, the mass of an electron, just under 10 −30 kg, can be compared to the mass of the visible universe, estimated at between 10 50 and 10 60 kg. [5] It is a ratio in the order of about 10 80 to 10 90, or at most one ten-billionth of a googol (0.00000001% of a googol).
Therefore, it requires 10 94 such books to print all the zeros of a googolplex (that is, printing a googol zeros). [4] If each book had a mass of 100 grams, all of them would have a total mass of 10 93 kilograms. In comparison, Earth's mass is 5.97 × 10 24 kilograms, [5] the mass of the Milky Way galaxy is estimated at 1.8 × 10 42 kilograms ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 24 February 2025. There are 4 pending revisions awaiting review. Scientific projections regarding the far future Several terms redirect here. For other uses, see List of numbers and List of years. Artist's concept of the Earth 5–7.5 billion years from now, when the Sun has become a red giant While the ...
The "Woodcut" map of London, dating from the 1560s Map showing the extent of the Great Fire of London, which destroyed nearly 80% of the City The 1666 Great Fire as depicted in a 17th-century painting: it depicts Old London Bridge at left, churches, houses, and the Tower of London at right, as seen from a boat near Tower Wharf.
English: Map of the British city of London in around 1300. Vectorised version of File:Plan of London in 1300.jpg by William R. Shepherd, a work in the public domain in the United States, also its home country, by virtue of being published in 1923 without copyright renewal.
The "Copperplate" map of London is an early large-scale printed map of the City of London and its immediate environs, surveyed between 1553 and 1559, which survives only in part. It is the earliest true map of London (as opposed to panoramic views , such as those of Anton van den Wyngaerde ).
(10 9 days is roughly 2.738 million years.) About 10 9 months ago, dinosaurs walked the Earth during the late Cretaceous. (10 9 months is roughly 83.3 million years.) About 10 9 years—a gigaannus—ago, the first multicellular eukaryotes appeared on Earth. About 10 9 decades ago, the thin disk of the Milky Way started to form. (10 9 decades ...
Greater London's population declined steadily in the decades after World War II, from an estimated peak of 8.6 million in 1939 to around 6.8 million in the 1980s. However, it then began to increase again in the late 1980s, encouraged by strong economic performance and an increasingly positive image.