Solar energy is lauded as an inexhaustible fuel source that is pollution- and often noise-free. The technology is also versatile. For example, solar cells generate energy for far-out places like ...

We tend to think of sunlight as something temporary; here when the sun is up, gone when it moves to the other side of the world. But a new, molecular-scale breakthrough challenges that idea, ...

Solar energy has a simple but annoying weakness. It disappears when the sun does. Even the most efficient systems struggle with this basic reality—no sunlight means no power. Scientists have long ...

The original version of this story appeared in Quanta Magazine. Our sun is the best-observed star in the entire universe. We see its light every day. For centuries, scientists have tracked the dark ...