polaris star

Polaris is the Closest, Brightest Cepheid Variable. Very Recently, Something Changed.

A new study has revealed that Polaris' pulsating behavior may be caused by its binary companion, resolving a long-standing mystery…

7 months ago

Astrophoto: Polaris and Circumpolar Rotation in 30 Minutes

This recent image from astrophotographer John Chumack shows the Earth's natural rotation in just 30 minutes of exposure time. Polaris,…

11 years ago