#GrandFinale orbit #21 of 22 underway. Spacecraft will sample Saturn’s upper atmosphere at ~76,000 MPH (122K KPH) https://t.co/977ghMtgBy pic.twitter.com/LMVt5OpTen— NASA Solar System (@NASASolarSystem) August 31, 2017
#GrandFinale orbit #21 of 22 underway. Spacecraft will sample Saturn’s upper atmosphere at ~76,000 MPH (122K KPH) https://t.co/977ghMtgBy pic.twitter.com/LMVt5OpTen