Chi Cygni, a star that pulses in and out like a beating heart, aligns near the neck of Cygnus, the swan, which stands high overhead at nightfall. The pulsations cause Chi Cygni’s size and brightness to change dramatically.
Chi Cygni, a star that pulses in and out like a beating heart, aligns near the neck of Cygnus, the swan, which stands high overhead at nightfall. The pulsations cause Chi Cygni’s size and brightness to change dramatically.