2. The Moons of Jupiter
Europa and Ganymede, two of Jupiter’s largest moons, have captivated scientists with evidence of vast subsurface oceans hidden beneath their icy exteriors. These oceans might offer the key ingredients for life, protected from space’s harshness. Missions like Europa Clipper aim to analyze chemical signatures and hunt for water plumes erupting from below. By peering beneath the ice, researchers hope to uncover clues about alien ecosystems that could exist in these dark, hidden seas. Explore NASA’s mission.