https://spaceflightnow.com/2017/12/20/nuclear-powered-titan-drone-comet-sampler-picked-as-finalists-for-new-nasa-mission/
Personally, I am rooting for the drone!

NASA has narrowed its choices for a new billion-dollar robotic space mission: A nuclear-powered quadcopter to explore the hazy landscape of Saturn’s largest moon Titan, or a probe to scoop up a piece of a comet and return it to Earth.

The space agency announced its selections Wednesday, picking two concepts from 12 proposals submitted by scientists earlier this year in a competition to win government funding to build and launch a mission by the end of 2025.

The teams behind the Dragonfly mission to Titan and the CAESAR mission to comet 67P/Churyumov-Gerasimenko will receive $4 million from NASA over the next year to refine their plans and designs, setting the stage for NASA to decide in July 2019 which mission will go forward to launch.

The winner will become the fourth mission in NASA’s New Frontiers program, a series of science-driven solar system probes cost-capped at about $1 billion that has so far produced the New Horizons mission to Pluto, the Juno orbiter at Jupiter, and the OSIRIS-REx spacecraft on the way to snag a sample of an asteroid and bring it back to Earth.

The Dragonfly mission would reach Titan in 2034, descend through its thick atmosphere and deploy a rotorcraft to make multiple hops across the moon’s alien surface over a two-year mission, surveying dune fields and rivers and lakes of liquid methane and ethane in search of the building blocks of life.