As Earth approaches warmer levels experienced earlier in its geologic history, it may be bad news for human survival.

The controversy endures over Pluto's true status, but the solar system underdog continues to capture hearts across the globe.

YR4 has a very small chance of striking Earth when its orbit briefly intersects our planet's in December 2032.

For a long time, scientists thought the Earth's inner core was a solid ball of metal, sort of like a planet within a planet ...

According to the calculations run by Ozaki and Reinhard, the oxygen-rich habitable history of Earth could end up lasting for ...

YR4 has raised alarm as its chances of hitting Earth grow. Experts warn that a collision could release 500 times the energy ...

Seismic wave data previously suggested the Earth’s hot inner core is slowing its spin. Now, researchers say it’s also ...

Purple Earth Hypothesis suggests Earth was once a purple planet. Early microbes used retinal, not chlorophyll, for ...

The head of planetary defense at the European Space Agency discusses 2024 YR4, an asteroid with a small chance of striking ...

Researchers studying decades of earthquake data say they have found the first evidence that, in addition to spinning backward ...

Earth's oceans may have been green for billions of years until the first photosynthetic organisms flooded our atmosphere with ...

On this day 35 years ago, NASA's Voyager 1 spacecraft took a picture that changed how we see our planet. The iconic "Pale ...