In what year was the Hubble Space Telescope launched? Answer with the four-digit year only.
In what year did Hayabusa2 return its asteroid Ryugu samples to Earth? Answer with the four-digit year only.
Which particle carries the electromagnetic force? Answer with the particle name only, in lowercase.
How many degrees of longitude does one standard time zone span? Answer with the whole number only.
Which airline operates the largest fleet of Airbus A380s? Answer with the airline name only.
In what year did the Airbus A380 enter commercial service? Answer with the four-digit year only.
In what year was Ivy Mike, the first full-scale hydrogen bomb test, detonated? Answer with the four-digit year only.
Which astronomer formulated the three laws of planetary motion? Answer with the surname only.
What is the capital of Ethiopia? Answer with the city name only.
Which planet is closest to the Sun? Answer with the name only.
In what year did Werner Heisenberg publish the uncertainty principle? 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.
What is the two-character IATA code of Singapore Airlines? Answer with the two-character code only.
In what year was the European Space Agency established? Answer with the four-digit year only.
The equator passes through Brazil. Answer true or false.
In what year did Czechoslovakia split into the Czech Republic and Slovakia? 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 neutrons are in the nucleus of uranium-238? Answer with the whole number only.
How many pascals are in one standard atmosphere, exactly? Answer with the whole number only.
In what year did the Boeing 777 enter commercial service? Answer with the four-digit year only.
