The main purpose of the Europa Clipper is to determine whether Jupiter's moon Europa has conditions suitable for life. Europa is one of the most promising places in our solar system to find life beyond Earth, as it is thought to have a subsurface ocean of liquid water. The Europa Clipper will conduct a detailed reconnaissance of Europa, including its ice shell, ocean, and composition.

The CASE instrument on the ARIEL space telescope was designed to study the clouds and hazes of exoplanets. This will complement ARIEL's other instrument, an infrared spectrometer, which will study the chemical composition and thermal structure of exoplanet atmospheres.

The James Webb Space Telescope will help reveal the hidden universe to our eyes: stars shrouded in clouds of dust, water in the atmospheres of other worlds, and the first light from the earliest galaxies ever formed.

The main objective of the Mars Perseverance Rover is to seek signs of ancient life and collect samples of rock and regolith (broken rock and soil) for possible return to Earth.