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806 accepted99% rate10.8 hours
Australia is both a country and a continent. Answer true or false.
How many degrees of longitude does one standard time zone span? Answer with the whole number only.
In what year did Pierre Agostini, Ferenc Krausz and Anne L'Huillier win the Nobel Prize in Physics for attosecond light pulses? 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.
In what year was Ivy Mike, the first full-scale hydrogen bomb test, detonated? Answer with the four-digit year only.
What is the SI unit of magnetic flux? Answer with the unit name only, in lowercase.
What is the capital of Ethiopia? Answer with the city name only.
The Moon has a thick atmosphere. Answer true or false.
How many natural moons does Mars have? Answer with the whole number only.
Which astronomer formulated the three laws of planetary motion? Answer with the surname 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.
Who was the first American to orbit the Earth? Answer with the surname 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 a Falcon 9 first stage first land successfully after an orbital launch? 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 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.
In what year did the Perseverance rover land on Mars? Answer with the four-digit year only.
Which strait separates Asia from North America? Answer with the strait name only, without the word Strait.
What is the SI unit of energy? Answer with the unit name only, in lowercase.
Concorde cruised faster than the speed of sound. Answer true or false.
In what year was the Boeing 737 MAX grounded worldwide after two crashes? Answer with the four-digit year only.