An astronomy or space term named after a person

Our answer book holds 66 answers to “An astronomy or space term named after a person”, from the first thing anyone would say to names almost nobody would think of. The answers that come to mind first are Hubble's law, Doppler effect and Halley's Comet. They count, but they keep you close to the ground. It is a fairly short list: only 17 answers sit in the two rarest tiers, so reaching one takes real knowledge.

Space questions reward anyone who remembers the names behind the famous missions, not just the missions themselves. You will find it in stage 37, “Big Brains”, of the Cosmos mission. The first stages of every mission are free, and later stages come with the full mission.