Recently, however, astronomers have been keeping track of starspot activity on a red giant star called XX Trianguli, and the irregular behaviour of its starspots suggests its interior may have ...

This artist’s impression shows the red supergiant ... of newly forming sunlike stars. Most of these short-lived stars cool and expand and eventually turn into so-called Type II Core Collapse ...

Called T Coronae Borealis (but also T CrB ... a red giant and a white dwarf. The red giant, an aging star, is expanding as it nears the end of its life, shedding layers of material into space.