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 ...

Publications of the Astronomical Society... Publications of the Astronomical Society of the Pacific Vol. 114, No. 794, April 2002 Red Giant Branch Stars: The Theoretical ... Red Giant Branch Stars: ...

Infrared images of a red giant star about 30,000 light years away, near the centre of our Milky Way galaxy, that faded away and then reappeared over the course of several years.

Artist’s impression of a cloud of smoke and dust being thrown out by a red giant star. Seen from the left the star remains bright but if viewed from the right it fades to invisibility.

around a hundred red giant stars—some of the oldest stars in our galaxy—some of which appear to pre-date the Milky Way's collision with another small galaxy called the Gaia-Enceladus-Sausage.