The night before the exam, sleep. A rested mind recalls what a tired one has only read.

History of Astronomy — quick quiz

2 NSEA-pattern questions on History of Astronomy. Instant scoring and solutions, no signup — see where you stand in a few minutes.

Question 1 of 2

Easy

Which astronomer first provided observational evidence that the Milky Way is not the only galaxy in the universe by resolving Cepheid variables in the Andromeda Nebula?