Variable stars change brightness. There are many types, including Cepheid Variables, Pulsating and Cataclysmic Variable Stars.

Italian astronomers have reported the discovery of a new lithium-rich galactic Cepheid star, identified by high-resolution spectroscopic observations. The newfound object, designated V363 Cas, is ...

Pulsating star mystery solved in rare alignment of Cepheid variable and another star. ScienceDaily . Retrieved June 3, 2025 from www.sciencedaily.com / releases / 2010 / 11 / 101124143405.htm ...

Cepheid Variable Star P42 in NGC 5468 (IMAGE) NASA/Goddard Space Flight Center. Caption. At the center of these side-by-side images is a special class of star used as a milepost marker for ...

The findings, published in The Astrophysical Journal, reveal new details about the star's size, appearance, and characteristics. Polaris, a Cepheid variable star, is the brightest member of a ...

Armed with this knowledge, the team estimated the distance of 2,431 Cepheid variables in the Milky Way and, using their position in the sky, were able to create an important 3D map of our galaxy.

Astronomers in the US have succeeded in observing changes in the diameter of a Cepheid variable star for the first time. Measurements of Cepheids are important because they restrict the range of ...

These are Cepheid variables, a type of bright star that is unstable and slowly brightens and then fades with time. This pair of stars, ...

The star RS Puppis is one of the most luminous Cepheid variable stars, exhibiting a six-week cycle of changing brightness. (Image credit: NASA, ESA, Hubble Heritage Team (STScI/AURA)-Hubble/Europe ...