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This is an accepted version of this page This is the latest accepted revision, reviewed on 20 January 2025. See also: Orders of magnitude (numbers) and Long and short scales Natural number 1000000000 List of numbers Integers ← 10 0 10 1 10 2 10 3 10 4 10 5 10 6 10 7 10 8 10 9 Cardinal One billion (short scale) One thousand million, or one milliard (long scale) Ordinal One billionth (short ...
An American-style 15×15 crossword grid layout. A crossword (or crossword puzzle) is a word game consisting of a grid of black and white squares, into which solvers enter words or phrases ("entries") crossing each other horizontally ("across") and vertically ("down") according to a set of clues. Each white square is typically filled with one ...
The age of the Earth (actually the Solar System) was first accurately measured around 1955 by Clair Patterson at 4.55 billion years, [10] essentially identical to the modern value. For H 0 ~ 75 (km/s)/Mpc, the inverse of H 0 is 13.0 billion years; so after 1958 the Big Bang model age was comfortably older than the Earth.
Clues and answers must always match in part of speech, tense, aspect, number, and degree. A plural clue always indicates a plural answer and a clue in the past tense always has an answer in the past tense. A clue containing a comparative or superlative always has an answer in the same degree (e.g., [Most difficult] for TOUGHEST). [6]
The thin disk of our galaxy began to form when the universe was about 5 billion years old or 9 ± 2 Gya. [15] The Solar System formed at about 9.2 billion years (4.6 Gya), [5]: 22.2.3 with the earliest evidence of life on Earth emerging by about 10 billion years (3.8 Gya).
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[5] [6] Anthony is a former member of the UK's world sudoku and world puzzle championship teams, while Goodliffe is a 13-time winner of the Times Crossword Championships and UK sudoku champion. [5] [6]
His favorite individual clue is "It might turn into a different story" (whose solution is SPIRAL STAIRCASE). [19] In addition to work as a crossword editor, Shortz is a skilled table tennis player. He has co-owned the Westchester Table Tennis Center in Pleasantville, New York since 2009, and has been playing table tennis daily for the past 11 ...