When the Sun becomes a red giant, will the outer planets and moons become more temperate and conducive to Earth-like life? Terrence A. Murray Cincinnati, Ohio When the Sun runs out of hydrogen fuel ...

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

People always want to know what will happen to Earth when the sun eventually swells up as a red giant. For one thing, the expanding sun will turn the inner planets into cinders. It will almost ...

Thankfully, our sun's sunspot activity occurs along an approximate 11-year cycle, ... "The large-amplitude variations in the brightness of the red giant XX Tri have been observed before, ...

A time-lapse video released Wednesday (Sept. 11) shows enormous gas bubbles roiling on a nearby star called R Doradus, a red giant about 300 times bigger than our sun that lies roughly 180 light ...

The Sun will most likely eject its outer layer more slowly than those stars and will stay in its red-giant phase several times longer. But a great deal is still unknown about the Sun’s last act.

The images show the surface of the star R. Doradus, a red giant star 180 light-years away in the Dorado constellation. The star has a diameter about 350 times that of the sun, and it serves as a ...

Giant 'senior citizen' sunspot on 3rd trip around the sun could break a century-old record A mysterious, 100-year solar cycle may have just restarted NASA's Parker Solar Probe spots powerful ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. An artist's visualization of some of the spots on red giant XX Trianguli. | Credit: Viktor ...