The ocean covers more than 70% of Earth’s surface, yet we’ve explored less than 20% of it. Beneath the familiar waves lies a world so strange, so extreme, and so biologically diverse that it makes the ...

There is Earth itself, our planet's oxygen-rich atmosphere, created roughly 2.4 billion years ago by cyanobacteria, is ideal for human life but may not be so welcoming to others. Oxygen is highly ...

The newly discovered exoplanets, designated as GJ 9827 b, c and d, are located fairly close to their host star, completing orbits within 6.2 days. ESO A nearby 'super‑Earth' just 25 light years from ...