The National Aeronautics and Space Administration (NASA) invests in Development for mission to Saturn moon titan and Comet.

The National Aeronautics and Space Administration (NASA) invests in Development for mission to Saturn moon titan and Comet.

NASA choose two robotic mission planned to launch in mid of 2020 first is Comet Astrology Exploration Sample Return (CAESAR) and second one is Dragonfly,that would explore the potential landing sites on Titan.The Comet Astrology Exploration Sample Return (CAESAR) will collect samples of Comet's nucleus and send back on Earth.The Comet is made up the ancient stars,interstellar clouds,and birth of solar system.The sample will reveal the origin of the Earth's ocean and life as well as how these material contributes to Earth's.The Dragonfly is like a drone rotor-craft that would explore the prediction chemistry of Titan,in our solar system there exists an ocean world.The Dragonfly is a dual quad copter lander that having the advantages of environment on Titan that can fly on multiple locations,few hundreds miles apart,to sample material surface.It will monitor the  surface condition,image to investigate the d=geological process and seismic studies.
source NASA.