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1,165 accepted97% rate10.3 hours
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 was sovereignty over Macau transferred from Portugal to China? Answer with the four-digit year only.
Sydney is the capital of Australia. Answer true or false.
How many engines did Concorde have? Answer with the whole number only.
Who commanded Apollo 13? Answer with the surname only.
Which European country occupies most of the Jutland peninsula? Answer with the country name only.
What is the capital of Australia? Answer with the city name only.
In what year did Virgin Atlantic operate its first flight? Answer with the four-digit year only.
The neutron carries a positive electric charge. Answer true or false.
In what year did the Panama Canal open? Answer with the four-digit year only.
In what year did NASA launch the uncrewed Artemis I mission? Answer with the four-digit year only.
What is the name of Russia's state space corporation? Answer with the name only.
What is the two-character IATA code of Swiss International Air Lines? Answer with the two-character code only.
In what year did London Heathrow's Terminal 5 open? Answer with the four-digit year only.
What is the largest freshwater lake in the world by surface area? Answer with the lake name only, without the word Lake.
In what year did Brasilia become the capital of Brazil? Answer with the four-digit year only.
What is the capital of Nigeria? Answer with the city name only.
How many sovereign countries are there in South America? Answer with the whole number only.
In what year did US Airways Flight 1549 land on the Hudson River? Answer with the four-digit year only.
In what year was the kilogram redefined in terms of the Planck constant, taking effect on 20 May? Answer with the four-digit year only.
What is the capital of the US state of Pennsylvania? Answer with the city name only.
Which sea lies between Italy and the Balkan Peninsula? Answer with the sea name only, without the word Sea.
In what year did Wilhelm Roentgen discover X-rays? Answer with the four-digit year only.
How many meters is one astronomical unit, as defined exactly by the IAU in 2012? Answer with the whole number only.
What is the capital of Ghana? Answer with the city name only.