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What is the capital of Ethiopia? Answer with the city name only.
The Moon has a thick atmosphere. Answer true or false.
How many regions does metropolitan France have? Answer with the whole number only.
How many natural moons does Mars have? Answer with the whole number only.
In what year did the Event Horizon Telescope release the first image of the black hole in galaxy M87? Answer with the four-digit year only.
Which astronomer formulated the three laws of planetary motion? Answer with the surname only.
In what year did Michael Faraday discover electromagnetic induction? Answer with the four-digit year only.
In what year did Erwin Schrodinger publish his wave equation? Answer with the four-digit year only.
In what year did the Cassini spacecraft end its mission by plunging into Saturn? Answer with the four-digit year only.
In what year did the Airbus A350 enter commercial service? Answer with the four-digit year only.
In what year did Japan Airlines Flight 123 crash, the deadliest single-aircraft accident? Answer with the four-digit year only.
Which numbered law of motion of Newton is usually written F = ma? Answer with the whole number only.
In what year was the European Space Agency established? Answer with the four-digit year only.
Photons have zero rest mass. Answer true or false.
What is the two-character IATA code of Singapore Airlines? Answer with the two-character code only.
In what year did Werner Heisenberg publish the uncertainty principle? Answer with the four-digit year only.
In what year was the Dominion of Canada formed by Confederation? Answer with the four-digit year only.
Who was the first American to orbit the Earth? Answer with the surname only.
The equator passes through Brazil. Answer true or false.
How many US states border Canada? Answer with the whole number only.
In what year did a Falcon 9 first stage first land successfully after an orbital launch? Answer with the four-digit year only.
In what year did Monarch Airlines collapse? Answer with the four-digit year only.
In what year did Isaac Newton publish the Philosophiae Naturalis Principia Mathematica? Answer with the four-digit year only.
How many engines does the Airbus A380 have? Answer with the whole number only.
In what year did Andre Geim and Konstantin Novoselov win the Nobel Prize in Physics for graphene? Answer with the four-digit year only.