K2-18b, an exoplanet 120 light-years away, may be the best hope to confirm that life exists beyond Earth. Here's what to know ...

Discover the order of planets in the solar system. From Mercury to Neptune, explore our solar system and learn more about our cosmic home. The solar system is our cosmic neighborhood, made up of ...

Presented by Sir David Attenborough, The Green Planet takes viewers on a journey into the hidden world of plants, to experience it from their perspective and on their timescale. The result is a ...

And although the first sign of possible extraterrestrials detected in the cosmos didn't come in the form of little green aliens flying ... a distant ocean-covered planet named K2-18b is likely ...