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In what year did London Heathrow's Terminal 5 open? 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.
How many hexagonal segments make up the James Webb Space Telescope's primary mirror? Answer with the whole number 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.
In what year was Space Shuttle Columbia lost during re-entry? Answer with the four-digit year 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 largest moon in the Solar System? Answer with the name only.
What is the capital of Ghana? Answer with the city name only.
What is the highest mountain in South America? Answer with the name only.
The Airbus A380 has two full-length passenger decks. Answer true or false.
In what year did Montenegro declare independence? Answer with the four-digit year only.
What is the capital of Saudi Arabia? Answer with the city name only.
In what year did Concorde enter commercial service? Answer with the four-digit year only.
How many letters long is an ICAO airline designator? Answer with the whole number only.
What is the IATA code of Dubai International Airport? Answer with the three-letter code only.
In what year was Neptune discovered? Answer with the four-digit year only.
The Boeing 747 has three engines. Answer true or false.
What is the SI base unit of thermodynamic temperature? Answer with the unit name only, in lowercase.
What is the capital of Finland? Answer with the city name only.
In what year did Stephen Hawking publish his prediction that black holes emit radiation, in Nature? Answer with the four-digit year only.
In what year did Isaac Newton publish Opticks? Answer with the four-digit year only.