The Sun is mostly hydrogen and helium. Its core temperature is 27 million degrees Fahrenheit. The Sun is about 4.6 billion years old. It's a G-type main-sequence star. Key takeaways sponsored by The ...

The sun has developed a massive “hole” 20 times larger than Earth, marking the second such occurrence in a week. The coronal hole is unleashing solar winds of 2.9 million km/h toward Earth, which will ...

The sun is sporting a giant coronal hole that could fit 20-30 Earths across, back-to-back. Coronal holes blast rapid solar winds into space that travel 500-800 kilometers per second. The winds are ...

Earth's orbit around the solar system is slightly elliptical so on one day each year it's closest to the Sun (shown here with a halo around it). For planet Earth and our star, the Sun, today is like ...