When it does take place, the outburst will be brief but it will appear as a new star in the sky for a little less than a week ...

"It is spectacular that we can now directly image the details on the surface of stars so ... gas bubbles roiling on a nearby star called R Doradus, a red giant about 300 times bigger than our ...

Sunspots, which are temporarily darkened areas on the surface of the sun ... have been keeping track of starspot activity on a red giant star called XX Trianguli, and the irregular behaviour ...

Skip to content viewer section. ABSTRACT Theoretical predictions of red giant branch stars’ effective temperatures, colors, luminosities, and surface chemical abundances are a necessary tool for the ...

At this stage, the star becomes a large red giant. Because a red giant is so large, its heat spreads out and the surface temperatures are predominantly cool, but its core remains red-hot.

The Blaze Star, T Coronae Borealis, may erupt in a dazzling nova this year, briefly becoming visible to the naked eye for the ...

TRAPPIST-1 is a red dwarf star about 40.7 light-years away from Earth. It is of particular interest because it has seven ...