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.
The Boeing 747 has three engines. Answer true or false.
In what year did Stephen Hawking publish his prediction that black holes emit radiation, in Nature? Answer with the four-digit year only.
How many dwarf planets does the International Astronomical Union officially recognize? Answer with the whole number only.
In what year was Zarya, the first module of the International Space Station, launched? Answer with the four-digit year only.
In what year did the Chelyabinsk meteor explode over Russia? Answer with the four-digit year only.
What is the two-character IATA code of KLM? Answer with the two-character code only.
How many engines did the McDonnell Douglas DC-10 have? Answer with the whole number only.
What is the two-character IATA code of Etihad Airways? Answer with the two-character code only.
In what year did Apollo 13 suffer its oxygen tank explosion? Answer with the four-digit year only.
What is the two-character IATA code of Lufthansa? Answer with the two-character code only.
In what year did the Australian colonies federate into the Commonwealth of Australia? Answer with the four-digit year only.
