Most people encounter the dollar sign on a daily basis: in stores, on websites, in the media and more. The symbol also serves ...

Discover interesting facts about the sun, the solar system's central star that supports all life on Earth.

Satellites, our eyes in the skies about 22,000 miles up, play a crucial role in predicting and tracking potentially ...

Researchers studied an ancient granite pebble naturally shaped like a face, marked with a red ochre fingerprint. It happens ...

Earth’s tilt is what causes the seasons; in the summer, when our planet’s pole is tipped toward the sun, the days are longer, ...