Alien Worlds Very Different to Earth Might Be Habitable For Billions of Years

One weird type of exoplanet could support life outside the habitable zone. (Hydrogen And Helium atmospheres could keep exoplanets warm enough to be habitable for billions of years, even at huge distances from their stars.)

Two Genes Crucial for Plants Colonizing the Earth 470 Million Ago Have Been Identified

‘Primordial’ Alien Planets May Be Habitable For Billions Of Years Suggests New Research