Not many people are aware of Thomas Harriot. He is credited with observing the moon through a telescope and creating a drawing in July 1609, 4 months before Galileo. He has many other achievements in navigation and mathematics as well as astronomy. He worked on the early basis of continuous compounding. Something we take for granted these days with our super accounts. The vast majority of his work was unpublished. This may be due to the risk of persecution or unwanted attention by religious authorities and political factions.
https://mathshistory.st-andrews.ac.u...phies/Harriot/