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

Everybody loves a parade. Most people who live in chillier climes aren’t exactly rejoicing when February rolls around — but ...

Glaciers once inched toward the sea, gouging rocks. When the ice masses melted, they infused oceans with nutrients that may ...

Scientists have uncovered new information about the Earth's core: it may not be completely solid. Instead, its center may be ...

Imagine floating in space, gazing on a frozen white orb. The ball hangs in the void, lonely and gleaming in the light from ...

NASA says Earth is in the clear from asteroid 2024 YR4, which previously had a small chance of impacting our planet in 2032.

NASA’s Transiting Exoplanet Survey Satellite (TESS) has been used to discover Earth-size planet TOI 700 e. It is "orbiting ...

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

Did you miss the last planetary parade in January? The next planetary alignment is almost here. How you can watch, a look at ...

For decades, scientists believed that Mars’ red color came from hematite, a type of iron oxide that forms under dry ...