cepheid variables

How Do We Measure Distance in the Universe?

This star is X light-years away, that galaxy is X million light-years away. That beginning the Universe is X billion…

9 years ago

A new kind of variable star -- 36 of that type, in fact -- has been found in a single…

11 years ago

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[/caption] Earlier this year, I wrote an article about a Cepheid variable star named V19 in M31. This Cepheid was…

13 years ago

[/caption] When Hubble first discovered a Cepheid variable in the galaxy M31, the universe grew. Previously, many astronomers had held…

13 years ago

[/caption] Cepheid variable stars - a class of stars that vary in brightness over time - have long been used…

13 years ago