It’s been over 25 years since the FDA approved a new ingredient for sunscreen in the United States. But a molecule called ...

The very long lives of our Sun, or any star, hinges on a delicate balance of forces.

A newly discovered meteor stream may be the smoking gun of an asteroid slowly disintegrating under the Sun’s intense heat.

Scientists at UC Santa Barbara have created a remarkable new material that works like a “rechargeable solar battery,” storing sunlight inside tiny molecules and releasing it later as heat — even long ...

A fast stream of solar wind from a colossal coronal hole in the sun’s atmosphere could spark a geomagnetic storm, bringing ...

Nuclear war is much more unpredictable than asteroids, but, unlike the dinosaurs of 66 million years ago, humans can avoid causing their own extinction.

As dazzling Venus dominates the evening sky, May is the perfect moment to start a months-long love affair with the brightest planet.

By the end of May almost all communities in the arctic circle will be seeing 24-hour daylight thanks to the tilt of the Earth ...