1,449 accepted99% rate20.0 hours
1,449 accepted99% rate20.0 hours
In what year did NASA's DART spacecraft impact the asteroid Dimorphos? Answer with the four-digit year only.
What is the SI unit of power? Answer with the unit name only, in lowercase.
The joule is the SI unit of force. Answer true or false.
Which company builds the Falcon 9 rocket? Answer with the name only.
Which river flows through Rome? Answer with the river name only, without the word River.
What is the two-character IATA code of Asiana Airlines? Answer with the two-character code only.
In what year did Arthur Eddington's solar eclipse expedition measure the bending of starlight? Answer with the four-digit year only.
In what year did Max Planck present his quantum hypothesis for black-body radiation? Answer with the four-digit year only.
Which NASA rover landed in Gale crater on Mars in 2012? Answer with the name only.
How many joules are in one kilowatt-hour? Answer with the whole number only.
How many sovereign countries in Africa are UN member states? Answer with the whole number only.
In what year did JetBlue operate its first flight? Answer with the four-digit year only.
In what year did Valentina Tereshkova fly in space? Answer with the four-digit year only.
What is the two-character IATA code of Aer Lingus? Answer with the two-character code only.
How many states does Brazil have, not counting the Federal District? Answer with the whole number only.
In what year was Richard Feynman awarded the Nobel Prize in Physics? Answer with the four-digit year only.
In what year were Francois Englert and Peter Higgs awarded the Nobel Prize in Physics? Answer with the four-digit year only.
What is the capital of Bulgaria? Answer with the city name only.
What is the SI unit of radioactivity? Answer with the unit name only, in lowercase.
What was the call sign of the Apollo 11 command module? Answer with the name only.
How many days did the Wuhan lockdown last, from 23 January to 8 April 2020? Answer with the whole number only.
Which country culled its entire farmed mink population in November 2020 over a mink-linked coronavirus variant? Answer with the country name only.
In which US city is Moderna headquartered? Answer with the city or town name only.
In what month of 2021 did the WHO designate Omicron a variant of concern? Answer with the month number (1-12) only.
What is the three-letter abbreviation of the US Paycheck Protection Program? Answer with the name only.