Life Without a Sun? Scientists Discover Habitable Exomoons for Billions of Years!

• Scientists from LMU University and Max Planck Institute found exomoons orbiting free-floating planets can be habitable for billions of years.
• Habitability is maintained by a dense hydrogen atmosphere and tidal heating, keeping oceans liquid for approximately 4.3 billion years.
• Free-floating planets are ejected from star systems during formation, sometimes carrying their moons into deep space.
• Tidal heating occurs as moons' elliptical orbits around free-floating planets generate internal friction, warming them without a star.
• A dense hydrogen atmosphere traps heat via collision-induced absorption, maintaining stable surface temperatures where CO2 would freeze.