Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to [email protected]. Why is the sky blue? – Mariana A-E., age 11, ...

When the Sun is near the horizon, its light passes through a lot more of the atmosphere to reach the Earth's surface than ...

Scientists have made a surprising discovery: they have managed to manipulate light particles in such a way that they can ...

Sky gazers in several U.S. states could get a colorful glimpse of the northern lights as we enter the weekend, thanks to a recent geomagnetic storm.