Cepheid variables are an important rung on the cosmic distance ladder, a system astronomers use that builds one observation on another to draw logical conclusions about things much farther away ...

Using this calibrated rung on the distance ladder the accurate distance to additional 300 type Ia supernovae in far-flung galaxies was calculated. They compare those distance measurements with how ...

This has been accomplished by refining the so-called 'cosmic distance ladder' by measuring important milepost markers known as Cepheid variable stars. However, the Hubble value does not agree with ...