Arrows show the velocities of approximately 4,000 Cepheid variable stars. Green arrows represent closer stars, while magenta arrows indicate more distant stars. The green star (★) marks the average ...

Researchers have discovered that Cepheid variable stars in our neighboring galaxy, the Small Magellanic Cloud, are moving in opposing directions along two distinct axes. They found that stars closer ...

Cepheid stars have predictable brightness changes linked to their periods. This period-brightness relationship lets astronomers calculate a Cepheid's distance. Hubble found a Cepheid in the Andromeda ...

Delta Cephei, the archetype Cepheid variable star, is located in the constellation Cepheus, a circumpolar constellation visible in the northern sky. Delta Cephei's position can be determined relative ...

The discovery that the universe extends beyond the Milky Way galaxy was a pivotal moment in astronomy. In 1925, astronomer Edwin Hubble identified a Cepheid variable star, known as V1, in the ...

Gaia’s view of the Milky Way’s neighboring galaxies, the Large Magellanic Cloud (LMC) and the Small Magellanic Cloud (SMC). Researchers at Nagoya University in Japan have discovered that Cepheid ...