Add Yahoo as a preferred source to see more of our stories on Google. Earth with a glowing horizon For now, life is flourishing on our oxygen-rich planet, but Earth wasn't always that way – and ...

Rocky planets that are about earth-size, or maybe two to three times larger, will offer the best chances for simple microbial life, says geodynamicist. Despite endless debate on how and why earth has ...

From space, Earth looks like an absolute paradise with deep ocean blues and verdant green vegetation covering every continent including Antarctica. But are we biased in thinking that any sort of ...

Astrophysicists outline the links between atmospheric oxygen and the potential rise of advanced technology on distant planets. In the quest to understand the potential for life beyond Earth, ...

NASA says it has generated enough oxygen to keep a small dog alive on Mars for at least 10 hours, marking a huge milestone for long-term plans to build bases on the Red Planet. The achievement came ...

If you want to build anything with metal components, you need fire. In other words, say Balbi and Frank, astronomers looking for signs of high-tech alien civilizations should focus their efforts on ...

In the quest to understand the potential for life beyond Earth, researchers are widening their search to encompass not only biological markers, but also technological ones. While astrobiologists have ...

Oxygen is a fundamental requirement of life, and the loss of oxygen in water, referred to as aquatic deoxygenation, is a threat to life at all levels. In fact, researchers describe how ongoing ...

The amount of oxygen in the Earth’s atmosphere makes it a habitable planet. Twenty-one percent of the atmosphere consists of this life-giving element. But in the deep past — as far back as the ...

(CNN) — The first experiment to produce oxygen on another planet has come to an end on Mars after exceeding NASA’s initial goals and demonstrating capabilities that could help future astronauts ...

Have you ever looked up at the stars and wondered if we could breathe on other worlds? Earth is famous for its blue skies and fresh air, but what about our planetary neighbours? In our solar system, ...