Imagine waking up one morning to find our Sun replaced by a cosmic powerhouse far stranger than anything we have seen. From giants that could swallow planets whole to stars so dense they bend reality, ...

Within a few dozen light years of the Sun, the sky is crowded with stars that could, in principle, host living worlds. I want to know which of those neighbors are genuinely promising, not just famous ...

How big it is: 865,000 miles (1.392 million kilometers) across How far away it is: 93 million miles (150 million km) What type of star it is: A yellow dwarf star The sun is the star at the center of ...

The Orion constellation is home to some of the most luminous stars in our Milky Way galaxy. When you purchase through links ...

Songs about the sun, moon, and stars are this week's theme. This program, hosted by JoAnn Castle, celebrates the celestial with songs such as "Keep Your Sunny Side Up" and "Destination Moon". JoAnn ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Astronomers have ...

Astronomers have uncovered what appear to be 21 neutron stars in orbit around stars like our Sun. The discovery is surprising because it is not clear how a star that exploded winds up next to a star ...

Solar flares are bright flashes of light from the Sun that release large amounts of electromagnetic radiation. And while normal flares can release as much as 10 25 joules of energy, so-called ...

"Our estimated mass-loss rates can be used as a benchmark for stellar wind models and expand our limited observational evidence for the winds of sun-like stars." When you purchase through links on our ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. About 92 million miles from the sun, Earth and its 8.2 ...