HUNTING for aliens is now a little easier as scientists discover a new sign that gives away life on far-off planets.

Scientists discovered that methyl halides, a gas produced by microbes, could be a biosignature for life on distant planets.

But scientists have discovered a new way for oxygen to form on planets with atmospheres thick with carbon dioxide without the need for critters. Researchers told Space.com how they looked for ...

A new study conducted using existing data on Mars points to ferrihydrite, a substance that forms in the presence of water, oxygen, and iron, giving Mars its red ...

For now, life is flourishing on our oxygen-rich planet, but Earth wasn't always that way – and scientists have predicted that, in the future, the atmosphere will revert back to one that's rich ...

Studying the orbits of thousands of exoplanets shows that large planets tend to have elliptical orbits, while smaller planets tend to have more circular orbits. This split coincides with several other ...

He continues: “According to that simplified picture, the ratio of carbon and oxygen gases in a planet’s atmosphere should match the ratio of carbon and oxygen gases in its natal disk ...