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How many people have walked on the Moon? Answer with the whole number only.
What is the longest river in Europe? Answer with the river name only, without the word River.
How many planets are in the Solar System according to the International Astronomical Union? Answer with the whole number only.
The summit of Mount Everest lies on the border between Nepal and China. Answer true or false.
Who formulated the uncertainty principle in quantum mechanics? Answer with the surname only.
The equator passes through India. Answer true or false.
How many kilometers long is each arm of a LIGO interferometer? Answer with the whole number only.
What is the capital of Kenya? Answer with the city name only.
What is the capital of the US state of Illinois? Answer with the city name only.
What is the four-letter acronym of India's national space agency? Answer with the acronym only.
In what year was the Kepler space telescope launched? Answer with the four-digit year only.
In which country is the ancient city of Petra? Answer with the country name only.
Which airport handled the most passengers in the world in 2024? Answer with the city name only.
In what year was Qantas founded? Answer with the four-digit year only.
How many states does the United States have? Answer with the whole number only.
In what year was 51 Pegasi b, the first exoplanet found orbiting a Sun-like star, announced? Answer with the four-digit year only.
In what year did the Tenerife airport disaster, the deadliest accident in aviation history, occur? Answer with the four-digit year only.
In what year did Viking 1 land on Mars? Answer with the four-digit year only.
In what year was Cathay Pacific founded? Answer with the four-digit year only.
How many autonomous communities does Spain have? Answer with the whole number only.
How many Apollo missions landed astronauts on the Moon? Answer with the whole number only.
What is the capital of Afghanistan? Answer with the city name only.
How many constellations does the International Astronomical Union recognize? Answer with the whole number only.
At which cosmodrome in Kazakhstan did Gagarin's flight launch? Answer with the name only.
How many Nobel Prizes in Physics did John Bardeen win? Answer with the whole number only.