RS Puppis, a type of variable star known as a Cepheid variable. Credit: Hubble Legacy Archive, NASA, ESA The universe is expanding, but how fast exactly? The answer appears to depend on whether you ...
A new analysis of pulsing stars has revealed the Milky Way’s twisted shape. Scientists have known since the 1950s that the spiral-shaped Milky Way’s disk is warped, bending by thousands of light-years ...
Astronomers from the University of Warsaw, Poland and elsewhere have detected a new classical Cepheid variable star. The newfound star, which received designation OGLE-GD-CEP-1884, has the longest ...
In commemoration of Edwin Hubble's discovery of a Cepheid variable class star, called V1, in the neighboring Andromeda galaxy 100 years ago, astronomers partnered with the American Association of ...
At the center of these side-by-side images is a special class of star used as a milepost marker for measuring the universe’s rate of expansion – a Cepheid variable star. The two images are very ...
Ninety years ago, Harvard astronomer Henrietta Leavitt spent years painstakingly examining thousands of sky photographs to search for and study variable stars. Her laborious hunt led to the discovery ...
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