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1,256 accepted99% rate16.9 hours
In what year did Apollo 13 suffer its oxygen tank explosion? Answer with the four-digit year only.
In what year did the Chelyabinsk meteor explode over Russia? Answer with the four-digit year only.
What is the two-character IATA code of Lufthansa? Answer with the two-character code only.
In what year did Niels Bohr publish his model of the hydrogen atom? Answer with the four-digit year only.
Which dwarf planet is the largest object in the asteroid belt? Answer with the name only.
Which airline alliance does British Airways belong to? Answer with the alliance's full name.
What is the capital of New Zealand? Answer with the city name only.
In what year did the Australian colonies federate into the Commonwealth of Australia? Answer with the four-digit year only.
In what year did the travel group Thomas Cook and its airline collapse? Answer with the four-digit year only.
In what year did Henry Cavendish carry out his experiment to measure the density of the Earth? Answer with the four-digit year only.
In what year was the Hubble Space Telescope launched? Answer with the four-digit year only.
What is the capital of Morocco? Answer with the city name only.
Marie Curie won Nobel Prizes in both physics and chemistry. Answer true or false.
How many cantons does Switzerland have? Answer with the whole number only.
What is the two-character IATA code of Qantas? Answer with the two-character code only.
Which particle carries the electromagnetic force? Answer with the particle name only, in lowercase.
Australia is both a country and a continent. Answer true or false.
How many degrees of longitude does one standard time zone span? Answer with the whole number only.
Who was the first person to walk on the Moon? Answer with the surname only.
In what year did Pierre Agostini, Ferenc Krausz and Anne L'Huillier win the Nobel Prize in Physics for attosecond light pulses? Answer with the four-digit year only.
In what year did a door plug blow out of an Alaska Airlines Boeing 737 MAX 9 over Oregon? Answer with the four-digit year only.
What is the name of China's space station? Answer with the one-word name only.
How many airlines founded Star Alliance? Answer with the whole number only.
In what year did the Boeing 707 enter commercial service? Answer with the four-digit year only.
In what year did Stephen Hawking die? Answer with the four-digit year only.