BY THE NUMBERS

2,000: Estimated number of stars that can be seen without a telescope from an ideal location on a clear, moonless night far away from any urban centre

400,000,000,000: The estimated number of stars in the Milky Way, the galaxy Earth is located in

1,000,000,000,000,000,0 00,000,000: The estimated number of stars in the observable universe

Sources: coolcosmos.com, theatlantic.com