Red giant
Videos
A red giant is a luminous giant star of low or intermediate mass in a late phase of stellar evolution. The outer atmosphere is inflated and tenuous, making the radius large and the surface temperature
An illustration comparing the structure of the Sun (left) and its possible future as a red giant (right; not to scale). The inset at the bottom right shows a size comparison.
This image tracks the life of a Sun-like star, from its birth on the left side of the frame to its evolution into a red giant on the right after billions of years
Mira A is an old star, already shedding its outer layers into space
Carbon star
Videos
A carbon star is typically an asymptotic giant branch star, a luminous red giant, whose atmosphere contains more carbon than oxygen. The two elements combine in the upper layers of the star, forming c
Y Canum Venaticorum, a carbon star in the Canes Venatici constellation, in optical light
Echelle spectra of the carbon star UU Aurigae
Optical light image of the carbon star VX Andromedae