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In what year did the Boeing 777 enter commercial service? Answer with the four-digit year only.
In what year did the Juno spacecraft enter orbit around Jupiter? Answer with the four-digit year only.
What is the two-character IATA code of All Nippon Airways? Answer with the two-character code only.
In what year did the Perseverance rover land on Mars? Answer with the four-digit year only.
A free proton is heavier than a free neutron. Answer true or false.
Which airline alliance does Air France belong to? Answer with the alliance's full name.
In what year was James Chadwick awarded the Nobel Prize in Physics? Answer with the four-digit year only.
What is the SI unit of energy? Answer with the unit name only, in lowercase.
What is the most populous country in Africa? Answer with the country name only.
Concorde cruised faster than the speed of sound. Answer true or false.
What is the largest hot desert in the world? Answer with the desert name only, without the word Desert.
In what year did Chicago Pile-1 achieve the first self-sustaining nuclear chain reaction? Answer with the four-digit year only.
How many seconds are in one day of exactly 24 hours? Answer with the whole number only.
In what year was the Boeing 737 MAX grounded worldwide after two crashes? Answer with the four-digit year only.
What is the capital of Kazakhstan? Answer with the city name only.
In what year did the Apollo 1 cabin fire occur? Answer with the four-digit year only.
What is the height of K2 in meters, as usually cited? Answer with the whole number only.
What is the capital of Peru? Answer with the city name only.
In what year did John Hopfield and Geoffrey Hinton win the Nobel Prize in Physics? Answer with the four-digit year only.
What is the largest US state by area? Answer with the name only.
In what year did Japan Airlines file for bankruptcy protection? Answer with the four-digit year only.
In what year did William Herschel discover Uranus? Answer with the four-digit year only.
Which color of visible light has the longest wavelength? Answer with the color name only, in lowercase.
What is the two-character IATA code of Air France? Answer with the two-character code only.
Buzz Aldrin was the first person to step onto the Moon. Answer true or false.