These stars can make new elements, undergo pulsations on the timescale of days to years, and lose a lot of their mass—throwing off an Earth-mass equivalent of material over a four-year period—before ...

Artist's concept of a red giant star and white dwarf orbiting one another. When the red giant moves behind the white dwarf, a nova explosion on the white dwarf ignites. (Photo Credit: NASA Goddard ...

Together, the observations and simulations show that dust grains alone cannot explain how winds escape from oxygen-rich red giant stars like R Doradus. At this late stage of stellar life, stars ...

Astronomers have identified a massive red giant star with a newly detected companion that appears to be stirring up trouble in the system, reshaping gas and dust in ways that could end in a dramatic ...

The dimming of Betelgeuse seen at the end of 2019 and the start of 2020 explained — the red giant star “sneezed.” Betelgeuse dimmed in the final few months of 2019, perplexing both professional and ...

Scientists observing the red giant star R Doradus have found that starlight isn’t strong enough to drive its stellar winds, overturning a long-standing theory. The dust grains around the star are ...

"Throwing a close companion into the mix could possibly wreak further havoc on the already complicated processes surrounding these stars." When you purchase through links on our site, we may earn an ...

"These vibrations told us something unexpected about this star's history." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Using NASA's ...