"A strong magnetic field is very important for life on a planet." ...

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

When astronomers announced Kepler-452b, they were not just adding another distant world to a growing catalog. They were ...

With satellites and space junk increasingly cluttering our planet’s low Earth orbit, a team of scientists warn that this ...

Earth's radiation budget is a core process of the Earth-atmosphere system, closely linked to global climate and environmental ...

The object dubbed Earth's "second moon" is actually a quasi-satellite that's accompanied the planet since 1957 — not a true ...

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 extent to which Mars is quietly tugging on Earth's orbit and shaping the ...

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

For anyone curious about what it's like to stand on another planet, Earth offers a few convincing previews. Mars may be 140 ...