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In what year was Star Alliance founded? 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.
In what year is Halley's Comet next expected at perihelion? 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.
Uranus has an axial tilt of roughly 98 degrees. Answer true or false.
Which airline alliance does Lufthansa belong to? Answer with the alliance's full name.
Bolivia is landlocked. Answer true or false.
In what year did Heike Kamerlingh Onnes discover superconductivity? Answer with the four-digit year only.
How many engines did Concorde have? Answer with the whole number only.
In what year did Alain Aspect, John Clauser and Anton Zeilinger win the Nobel Prize in Physics? Answer with the four-digit year only.
Who commanded Apollo 13? Answer with the surname only.
In what year was sovereignty over Macau transferred from Portugal to China? Answer with the four-digit year only.
In what year was the core module of the Mir space station launched? Answer with the four-digit year only.
Victoria Falls lies on which river? Answer with the river name only, without the word River.
In what year did the Airbus A320 enter commercial service? Answer with the four-digit year only.
What is the standard mains frequency of the electricity grid in continental Europe, in hertz? Answer with the whole number only.
Which European country occupies most of the Jutland peninsula? Answer with the country name only.
Who unified electricity, magnetism and light in a set of equations in the 1860s? Answer with the surname only.
Who discovered radioactivity in 1896? Answer with the surname only.
In what year did Pan American World Airways cease operations? Answer with the four-digit year only.
What is the two-character IATA code of Swiss International Air Lines? Answer with the two-character code only.
What is the capital of Norway? Answer with the city name only.
In what year did Yuri Gagarin become the first human in space? Answer with the four-digit year only.
The Great Red Spot is a storm on Saturn. Answer true or false.
The neutron carries a positive electric charge. Answer true or false.