Which astronaut holds the Guinness World Record for the most cumulative time spent in space, having logged over 878 total days across five missions? A. Sergei Krikalev B. Gennady Padalka C. Peggy Whitson D. Scott Kelly Check Answer 💡 Explanation: Russian cosmonaut Gennady Padalka holds the record for the most total cumulative days spent in space, surpassing 878 days before retiring in 2017. 📚 Topics: Miscellaneous Records and Achievements 💡 Found this helpful? Share with friends! Share Tweet WhatsApp Share