Exoplanets like Earth have been discovered but not all Earth-like planets are equal when it comes to alien life.

New research suggests that the Earth's solid inner core is softer and more dynamic than previously thought, changing ideas.

Small but mighty, the red planet — our celestial neighbor — has made Earth’s climate what it is today. Mars’ gravitational ...

It looks like a sapphire jewel in space, but HD 189733bis anything but serene. With winds reaching seven times the speed of ...

"Without Mars, Earth's orbit would be missing major climate cycles. What would humans and other animals even look like if ...

This doesn’t mean Mars causes ice ages on its own. Orbital cycles are only part of the picture. Earth’s oceans, atmosphere, ...

At half the size of Earth and one-tenth its mass, Mars is a featherweight as far as planets go. Yet new research reveals the ...

A mile-wide asteroid known as 2005 UK1 will safely pass Earth on Jan. 12, 2026, at 32 times the moon’s distance, posing no ...

Crystals hidden in Australia’s oldest rocks have revealed new clues about how Earth and the Moon formed. The study suggests ...

As the iron and nickel inside our planet shift, so does Earth's magnetic field, meaning the North (and South) Poles are also ...

The planet HD 189733 b was discovered in 2005, as one of many huge gas worlds snuggled tightly against their suns. It ...

P arts of the ocean reached temperatures of -15°C (5°F) without freezing 717-660 million years ago, geologists and ...