In what year did the Perseverance rover land on Mars? Answer with the four-digit year only.
In what year was James Chadwick awarded the Nobel Prize in Physics? Answer with the four-digit year only.
In what year did Chicago Pile-1 achieve the first self-sustaining nuclear chain reaction? 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 largest hot desert in the world? Answer with the desert name only, without the word Desert.
In what year did the Apollo 1 cabin fire occur? Answer with the four-digit year only.
How many member states does the European Union have, as of 2025? Answer with the whole number only.
In what year did Japan Airlines file for bankruptcy protection? Answer with the four-digit year only.
What is the two-character IATA code of Air France? Answer with the two-character code only.
Which asteroid moon did NASA's DART spacecraft hit in 2022? Answer with the name only.
What is the height of Mount Kilimanjaro in meters, as usually cited? Answer with the whole number only.
How many protons are in the nucleus of a uranium atom? Answer with the whole number only.
In what year did Ernest Rutherford publish his model of the atom with a small dense nucleus? Answer with the four-digit year only.
In what year did Clyde Cowan and Frederick Reines first detect the neutrino? Answer with the four-digit year only.
Pluto is larger than Earth's Moon. Answer true or false.
In what year did the Swissair fleet grounding occur? Answer with the four-digit year only.
What is the standard mains frequency of the electricity grid in the United States, in hertz? Answer with the whole number only.
Which river flows through Baghdad? Answer with the river name only, without the word River.
In what year was the first Bose-Einstein condensate produced in a laboratory? Answer with the four-digit year only.
