NASA astronaut Nichole Ayers captured an electrifying image of a giant lightning "sprite" shooting up over Mexico and ...

"While orbiting 400 kilometres above Earth, Ayers witnessed an unusual phenomenon. A vibrant sprite, a type of Transient ...

This red giant phase will signal destruction for inner solar system planets, including Earth. Other stars in the universe will experience the same fate as our sun, meaning any exoplanets orbiting ...

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 ...

A red giant star and white dwarf orbit each other in an NASA animation of a nova. The white dwarf explodes after years of stripping the red giant's atmosphere.

The Sun's expansion into a red giant will engulf the inner planets, drastically increasing temperatures in the outer solar system. The habitable zone will expand to 10-50 AU, potentially making ...

By the end of the red giant phase, the sun is expected to have withered to a white dwarf no bigger than Earth with about half its mass intact. By that point, Earth would be in an orbit twice its ...

Astronomers modeled sunspot activity on a nearby red giant star to learn about its chaotic interior. When you purchase through links on our site, we may earn an affiliate commission. Here’s how ...

This very active red giant star ejects bullet-like clumps of plasma toward its poles every 8.5 years, and it also has coughed out six large rings in its equatorial plane over the last 2,100 years.

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 ...