The Selma to Montgomery marches were a failure to demonstrate the desire of African-American citizens to exercise their constitutional right to vote.
Gerard Peter Kuiper -LRB- -LSB- langpronˈkaɪpər -RSB- -LSB- ˈkœypər -RSB- ; born Gerrit Pieter Kuiper ; December 7 , 1905 -- December 23 , 1973 -RRB- was a Dutch -- American astronomer , planetary scientist , selenographer , author and professor .. He is the eponymous namesake of the Kuiper belt .. Kuiper belt. Kuiper belt. Kuiper is considered by many to be the father of modern planetary science .. planetary science. planetary science. As professor at the University of Chicago , he was dissertation advisor to Carl Sagan .. University of Chicago. University of Chicago. dissertation advisor. doctoral advisor. Carl Sagan. Carl Sagan. In 1958 , the two worked on the classified military Project A119 , the secret Air Force plan to detonate a nuclear warhead on the Moon .. Project A119. Project A119