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In what year did Fermilab announce the discovery of the top quark? Answer with the four-digit year only.
In what year did the Tata Group take back control of Air India from the government? Answer with the four-digit year only.
In what year did Alessandro Volta announce the voltaic pile, the first electric battery? Answer with the four-digit year only.
In what year is Halley's Comet next expected at perihelion? Answer with the four-digit year only.
In what year was the Chernobyl nuclear accident? Answer with the four-digit year only.
Bolivia is landlocked. Answer true or false.
How many constellations does the International Astronomical Union recognize? Answer with the whole number only.
Delta Air Lines is a member of the oneworld alliance. Answer true or false.
In what year did Alexei Leonov perform the first spacewalk? Answer with the four-digit year only.
Jupiter is the largest planet in the Solar System. Answer true or false.
In what year was Concorde retired from commercial service? Answer with the four-digit year only.
How many states does India have, not counting union territories? Answer with the whole number only.
What is the IATA code of Hartsfield-Jackson Atlanta International Airport? Answer with the three-letter code only.
How many Nobel Prizes in Physics did John Bardeen win? Answer with the whole number only.
In which country is Angel Falls, the world's highest uninterrupted waterfall? Answer with the country name only.
What is the SI unit of force? Answer with the unit name only, in lowercase.
What is the four-letter acronym of Japan's national space agency? Answer with the acronym only.
What is the largest moon of Saturn? Answer with the name only.
In what year did SpaceX fly astronauts for the first time, on the Demo-2 mission? Answer with the four-digit year only.
In what year did Pan American World Airways cease operations? Answer with the four-digit year only.
Airport code KEF belongs to the main international airport of which country? Answer with the country name only.
Which airline alliance does Lufthansa belong to? Answer with the alliance's full name.
In what year did Marie Curie win her first Nobel Prize, the one in physics? Answer with the four-digit year only.
Uranus has an axial tilt of roughly 98 degrees. Answer true or false.
In what year did Air Berlin cease operations? Answer with the four-digit year only.