An Earth-like planet within the habitable zone of a star has been found to have an atmosphere, raising hopes it could support ...

In a major milestone in the search for life on other planets, astronomers have detected, for the first time, an atmosphere ...

How life started on our own planet may not seem as interesting as finding evidence of life on Mars or the icy moons Europa or Enceladus. But the search for the first eukaryotes on Earth remains as ...

Scientists have made a major breakthrough in the hunt of life outside our solar system after spotting an "Earth-like" planet.

If you were hoping we’d find alien life hanging out on a cozy, pint-sized planet anytime soon, then you should know that ...

Images of the incredibly wide variety of marine life on our planet, including seabirds, marine mammals, fish, corals, ...

Earth, our home planet, is a world unlike any other. The third planet from the sun, Earth is the only place in the known universe confirmed to host life. With a radius of 3,959 miles, Earth is the ...

Tiny life forms tucked into debris from an asteroid hit could catapult to other planets—including Earth—and survive, a new Johns Hopkins University study finds. The work demonstrates that a certain ...