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The celestial sphere is divided into ...

22 constellations

44 constellations

66 constellations

88 constellations

The current list of 88 constellations recognized by the International Astronomical Union since 1922 is based on the 48 listed by Ptolemy in his Almagest in the 2nd century, with early modern modifications and additions In 1930, the boundaries between the 88 constellations were devised by Eugène Delporte along vertical and horizontal lines of right ascension and declination.

Ts

3

theilr wikipedia → Constellation#88 modern constellations

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What is the source of the most powerful release of energy in the universe, second in scale only to the Big Bang?

supermassive stars

gamma-ray burst

What was the most beautiful comet of the second half of the twentieth century, with two tails visible to the naked eye?

Comet Hale-Bopp

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Which physician discovered that contaminated water was the source of the cholera epidemic in London in 1854?

Alexander Fleming