Mars is a cold, dry, desert-like planet. But billions of years ago, scientific evidence suggests that it had a thick ...

In a new book, NASA astrobiologist Caleb Scharf says the fate of life on Earth may hinge on leaving our planet behind ...

Earth may be on the verge of crossing several climate change tipping points that could have irreversible and devastating ...

Even long-lived subduction zones eventually die, and scientists believe they are witnessing the slow death of one in the ...

Is a sun a star or a planet? While science now agrees the sun is a star, new telescopes may soon challenge how we define ...

Traditionally, scientists believed that the charge polarity of the magnetosphere at the equator and the poles was the same, ...

Our Moon is slowly drifting away from Earth, not just due to tidal friction as previously thought. New research suggests ancient planetary impacts and ...

Temperature records from measurements of oxygen isotopes in the ice reveal that this area experienced a gradual, long-term ...

NASA is monitoring five asteroids passing Earth in mid-November 2025. All objects are moving at safe distances from the planet. According to NASA’s tracking, these five asteroids routinely pass close ...

Forget a round Earth—what if our planet was a perfect cube? In this SpaceBalls episode, we explore one of the most mind-bending "what if" scenarios in science. The results are crazier than you think!

And because it extends into space, the geomagnetic field also protects orbiting spacecraft, including most satellites and the ...