The James Webb Space Telescope is a powerful tool for studying space. It recently found exciting evidence on a faraway planet called K2-18b, which is 120 light-years away from Earth. This discovery is important because it suggests that K2-18b might have the right conditions for life. It’s in a good spot around a cool star, not too hot or too cold. K2-18b is bigger than Earth and has a special mix of gases in its air, like methane and carbon dioxide. It doesn’t have ammonia, which is good news. Some scientists think it might be covered in water with lots of hydrogen in the air. Hydrogen is important for life, and carbon is a building block of life.

In 2019, Hubble found water vapor on K2-18b, and later, James Webb detected dimethyl sulfide, which is connected to Earth’s life. Though uncertain about life on K2-18b, this discovery enhances our understanding of similar planets with hot climates, oceans, and hydrogen-rich atmospheres. K2-18b’s mysteries still fascinate scientists, and the James Webb Telescope will explore more distant planets, launching our space journey.