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

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 ...

In 1831, a baffling celestial phenomenon left humanity questioning the heavens: the sun turned blue. This eerie spectacle, ...

In 1831, a massive volcanic eruption cooled the Earth’s atmosphere by 1 degree Celsius and even caused the Sun to appear in ...

Six planets are parading across the sky, appearing as some of the night's brightest stars. A few easy tips can help you ...