1,448 accepted99% rate19.9 hours
1,448 accepted99% rate19.9 hours
In what year was the Kepler space telescope launched? Answer with the four-digit year only.
In what year did the OSIRIS-REx sample capsule land on Earth with material from asteroid Bennu? 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.
Who founded Virgin Atlantic? Answer with the surname only.
How many states does the United States have? Answer with the whole number only.
In what year did South Sudan become independent? Answer with the four-digit year only.
In what year was Qantas founded? Answer with the four-digit year only.
What is the capital of Iran? Answer with the city name only.
Ryanair is headquartered in Ireland. Answer true or false.
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 Namibia become independent? Answer with the four-digit year 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.
How many Nobel Prizes in Physics did John Bardeen win? Answer with the whole number only.
In what year did Charles Lindbergh fly solo nonstop from New York to Paris? Answer with the four-digit year only.
What is the largest moon of Saturn? Answer with the name only.
What is the capital of Vietnam? Answer with the city name only.
In what year did Alessandro Volta announce the voltaic pile, the first electric battery? Answer with the four-digit year only.
In what year did Fermilab announce the discovery of the top quark? Answer with the four-digit year only.
In what year did the de Havilland Comet begin the world's first scheduled jet airliner service? Answer with the four-digit year only.
In what year did the Boeing 747 enter commercial service? Answer with the four-digit year only.
Delta Air Lines is a member of the oneworld alliance. Answer true or false.
In what year did Marie Curie win her first Nobel Prize, the one in physics? Answer with the four-digit year only.