Tiny life forms tucked into debris from an asteroid hit could catapult to other planets—including Earth—and survive, a new ...

Scientists identify exoplanet candidate HD 137010 b, a possible Earth-size world orbiting a Sun-like star 146 light-years away ...

The Planetary Health Check is a key monitor of earth's vital signs—and will guide action for a more sustainable world.

Planet Earth is spinning a little faster today — resulting in one of the shortest days of the year. But the change will be so minuscule you won’t even notice. We’re talking even less time than the ...

Here's a thought experiment that keeps planetary scientists awake at night. Strip every living thing from our planet, every bacterium, every blade of grass, every creature that has ever drawn breath ...

Astronomers believe they have uncovered evidence of a previously unknown ninth planet lurking in the not-too-distant reaches of the solar system. This hypothetical world, dubbed "Planet Y," could be ...

Explore how Earth would appear without life. Studies from Universe Today and Cornell University reveal atmospheric signals, surface conditions, and implications for exoplanet observations.

Scientists continue to mine data gathered by NASA's Kepler Space Telescope, retired in 2018, and continue to turn up surprises. A new paper reveals the latest: a possible rocky planet slightly larger ...