New observations by the Webb Space Telescope have reignited the debate about possible life on K2-18b, a potentially habitable exoplanet 124 light-years away.
Observations and sample-return missions show us that space rocks tend to be rich in water, carbon and organic compounds. Yet meteorites on Earth are not. Why?
Astronomers have discovered a Tatooine world that orbits 2 brown dwarfs (failed stars). But strangely, the planet orbits the brown dwarfs at a 90 degree angle.
Could there be microbial life on Titan? New research suggests that despite being rich in organics, Titan might only be able to support a few pounds of microbes.