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In what year did Montenegro declare independence? Answer with the four-digit year only.
In what year did Concorde enter commercial service? Answer with the four-digit year only.
How many characters long is an IATA airline designator? Answer with the whole number only.
How many letters long is an ICAO airline designator? Answer with the whole number only.
In what year did Yang Liwei become China's first astronaut in space? Answer with the four-digit year only.
What is the IATA code of Dubai International Airport? Answer with the three-letter code only.
The Large Hadron Collider ring is about how many kilometers in circumference? Answer with the whole number rounded to the nearest kilometer.
In what year was Neptune discovered? Answer with the four-digit year only.
In what year did Isaac Newton die? Answer with the four-digit year only.
The Sun is a red dwarf star. 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 James Clerk Maxwell publish 'A Dynamical Theory of the Electromagnetic Field'? Answer with the four-digit year only.
The Boeing 747 has three engines. Answer true or false.
What is the capital of Saudi Arabia? Answer with the city name only.
In which country is the city of Timbuktu? Answer with the country name only.
In what year did Isaac Newton publish Opticks? Answer with the four-digit year only.
How many territories does Canada have? Answer with the whole number only.
In which country is Machu Picchu? Answer with the country name only.
In what year was Etihad Airways founded? Answer with the four-digit year only.
In what year did fragments of Comet Shoemaker-Levy 9 hit Jupiter? Answer with the four-digit year only.
Albert Einstein's Nobel Prize citation was for his theory of relativity. Answer true or false.
How many US states border Mexico? Answer with the whole number only.
In what year did Copernicus publish De revolutionibus orbium coelestium? Answer with the four-digit year only.
How many countries share a land border with China? Answer with the whole number only.