In what year was Space Shuttle Columbia lost during re-entry? Answer with the four-digit year only.
Which sea lies between Italy and the Balkan Peninsula? Answer with the sea name only, without the word Sea.
Which sea lies between Italy and the Balkan Peninsula? Answer with the sea name only, without the word Sea.
How many emirates make up the United Arab Emirates? Answer with the whole number only.
How many emirates make up the United Arab Emirates? Answer with the whole number only.
How many emirates make up the United Arab Emirates? Answer with the whole number only.
How many emirates make up the United Arab Emirates? Answer with the whole number only.
How many emirates make up the United Arab Emirates? Answer with the whole number only.
In what year was the Three Mile Island nuclear accident? Answer with the four-digit year only.
In what year was the Three Mile Island nuclear accident? Answer with the four-digit year only.
In what year was the Three Mile Island nuclear accident? Answer with the four-digit year only.
In what year was the Three Mile Island nuclear accident? Answer with the four-digit year only.
In what year was the Three Mile Island nuclear accident? Answer with the four-digit year only.
In what year did Wilhelm Roentgen discover X-rays? Answer with the four-digit year only.
In what year did Wilhelm Roentgen discover X-rays? Answer with the four-digit year only.
In what year did Wilhelm Roentgen discover X-rays? Answer with the four-digit year only.
In what year did Wilhelm Roentgen discover X-rays? Answer with the four-digit year only.
In what year did Wilhelm Roentgen discover X-rays? Answer with the four-digit year only.
How many meters is one astronomical unit, as defined exactly by the IAU in 2012? Answer with the whole number only.
How many meters is one astronomical unit, as defined exactly by the IAU in 2012? Answer with the whole number only.