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In what year did London Heathrow's Terminal 5 open? Answer with the four-digit year only.
In what year was Voyager 1 launched? Answer with the four-digit year only.
Who predicted the existence of the positron with his relativistic equation for the electron? Answer with the surname only.
In what year did Edwin Hubble publish the relation between galaxy distance and recession velocity? Answer with the four-digit year only.
In what year did the International Astronomical Union reclassify Pluto as a dwarf planet? Answer with the four-digit year only.
What is the capital of Nigeria? Answer with the city name only.
Airport code FCO belongs to the main international airport of which city? Answer with the city name only.
Saturn's average density is lower than that of water. Answer true or false.
How many characters long is an ICAO airport code? Answer with the whole number only.
Gamma rays have a higher frequency than radio waves. Answer true or false.
What is the deepest lake in the world? Answer with the lake name only, without the word Lake.
How many neutrons are in the nucleus of carbon-12? Answer with the whole number only.
In what year was the Nobel Prize in Physics awarded for the invention of efficient blue LEDs? Answer with the four-digit year only.
How many hexagonal segments make up the James Webb Space Telescope's primary mirror? Answer with the whole number only.
Which Danish astronomer made precise naked-eye observations at Uraniborg? Answer with the surname only.
What is the SI base unit of amount of substance? Answer with the unit name only, in lowercase.
What is the capital of the US state of Pennsylvania? Answer with the city name only.
How many emirates make up the United Arab Emirates? Answer with the whole number only.
In what year was Space Shuttle Columbia lost during re-entry? Answer with the four-digit year only.
In what year did Wilhelm Roentgen discover X-rays? Answer with the four-digit year only.
In what year did US Airways Flight 1549 land on the Hudson River? Answer with the four-digit year only.
What is the largest moon in the Solar System? Answer with the name only.
How many Space Shuttle orbiters flew in space? Answer with the whole number only.
In what year was SpaceX founded? Answer with the four-digit year only.
Light travels faster in water than in a vacuum. Answer true or false.