How did life begin on Earth? While scientists have theories, they don't yet fully understand the precise chemical steps that ...

Particles from Earth’s atmosphere may be preserved in the Moon's soil, offering a long-term record of Earth’s atmospheric history.

Researchers recreated conditions from billions of years ago and found that Earth’s young atmosphere could make key molecules linked to life. These sulfur-rich compounds, including certain amino acids, ...

The upcoming year will offer a blood-red moon, spectacular meteor showers and the first glimpse of the sun’s corona since ...

When Earth was a molten inferno, water may have been locked safely underground rather than lost to space. Researchers ...

More than a billion years ago, in a shallow basin across what is now northern Ontario, a subtropical lake much like ...

Today, oceans cover about 70% of Earth’s surface. This stark contrast has long driven scientific interest in how water ...

The year’s first supermoon and meteor shower will compete for dominance in January skies. Here are the best ways to see both.

More than a billion years ago, in a shallow basin across what is now northern Ontario, a subtropical lake much like ...

One of the most promising Earth-sized exoplanets may be far more barren than its early billing suggested, with new analyses pointing to a rocky world stripped of the protective gases that make a ...