The Sun is big. By volume, the Sun could fit roughly 1.3 million Earths inside of it, but new research suggests that our friendly star actually changes in size when it gets moody. In a paper published ...

Many Americans will get a once in a lifetime opportunity to view a total solar eclipse on August 21. Total solar eclipses are rare and occur when the moon passes between the sun and the Earth.

In the glare of the sun, an unknown number of near-Earth asteroids move on unseen orbits. A new generation of space telescopes could be our best defense against potential disaster. When you purchase ...

When the universe's first stars emerged from the cosmic dark ages, they ballooned to 10,000 times the mass of Earth's sun, new research suggests. When you purchase through links on our site, we may ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Astronomers may have discovered the smallest and heaviest white dwarf star ever seen, a ...

Your browser does not support the video element. A giant, black region of the sun — called a coronal hole — was spotted on Monday by NASA's Solar Dynamics ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. THERE’S PERHAPS nothing more ancient and unchanging than the sun ...