What Planet has a crater on it named after the man known in his lifetime as Gustavus Vassa?
Olaudah Equiano Olaudah Equiano (c. 1745 – 31 March 1797), known in his lifetime as Gustavus Vassa ( ), was a prominent African in London, a freed slave who supported the British movement to end the slave trade. His autobiography, published in 1789, helped in the creation of the Slave Trade Act 1807 which ended the African trade for Britain and its colonies.
Palimpsest (planetary astronomy) A palimpsest, in planetary astronomy, is an ancient crater on an icy moon of the outer Solar System whose relief has disappeared due to creep of the icy surface ("viscous relaxation") or subsequent cryovolcanic outpourings, leaving a circular albedo feature, perhaps with a "ghost" of a rim. Icy surfaces of natural satellites like Callisto and Ganymede preserve hints of their history in these rings. A typical example is Memphis Facula on Ganymede, a 340 km wide palimpsest.