NASA's latest plans for its Mars Sample Return mission will rely on the Perseverance rover and two 'Ingenuity-class' helicopters.
If there is Martian life then it could be in ice water under the red planet’s surface. The Mars Life Explorer, included in the most recent Planetary Science and Astrobiology Decadal Survey, would search for this.
Are the moons of Uranus "relic" ocean worlds like Ceres or active ocean worlds like Enceladus? A proposed flagship mission aims to find out.