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 ...

Sometimes I hear astronomy news that is cool, and sometimes I hear news that’s very cool… and sometimes I hear news where my reaction is, “That’s freaking insane!” The latest news: scientists have ...

The outer layers of most stars are like a pot of boiling water, with giant bubbles known as convection cells transporting energy and hot gases from deep inside the star to the surface. Bubbles on the ...

TULSA, Okla. — In honor of the Summer Solstice, our Weather Experiment Wednesday took us to the roof of Discovery Lab where Director of Education Chip Lindsey showed us how to measure the sun’s ...

The first images and videos are in from the National Science Foundation's Daniel K. Inouye Solar Telescope, and they show the bubbling, explosive surface of our sun in unprecedented detail. The sheer ...

What is a Coronal Hole? NASA has discovered a massive butterfly-shaped coronal hole on the Sun. Learn about these coronal ...