Astronomy Magazine – Your source for the latest news on astronomy, observing events, space missions, and more.

Picture of the Day

See all photos

A glob and a star

Massimo di Fusco, data acquired via Chilescope

The globular cluster M68 in Hydra lies at lower left of this image; at upper right is the variable star HD 109799. In 2021, astronomers confirmed the latter to be a member of the γ Doradus class of variable stars, which pulsate with waves driven by gravity, like those like on the surface of water.