Johannes Hevelius and his second wife and collaborator, Elisabetha were the 17th-century's astronomy power couple. For one, they had a personal observatory that was considered one of the most important in all Europe.
Research:

Percy Fawcett, Manuscript 512, and a Lost City in the Amazon, Pt. 1
34:05

SYMHC Classics: Swill Milk
39:22

Behind the Scenes Minis: Mary, Beulah, Baby Alive
33:26