Caption: "NASA image ID: STScI-PRC2006-02a".

Ursa Major, Ursa Minor, and Polaris are shown.

One finds Polaris by finding the Big Dipper (which is an easily-found asterism in Ursa Major) and then the pointer stars Merak (β Ursae Majoris) and Dubhe (α Ursae Majoris) (the farthest-from handle stars of the Big Dipper) point up from the pan of the Big Dipper toward Polaris.

Polaris is actually a triple star system (i.e., gravitationally bound multiple star system of 3 stars) consisting of α UMI Aa (F7 yellow supergiant), α UMI Ab (F6 main-sequence star), and α UMI B (F3 main-sequence star).

Note α UMI Aa (F7 yellow supergiant) and α UMI Ab (F6 main-sequence star) form a close binary binary system as the image shows.

The naked eye CANNOT resolve α UMI Aa and α UMI B, but good telescopic observation does as is show in the images. The Hubble Space Telescope (HST) and resolve α UMI Aa and α UMI Ab as is shown in the images. Probably only the two images on the right are from the HST.

Credit/Permission: NASA, Nancy R. Evans (CfA), Howard Bond (STScI), 2006 (uploaded to Wikipedia by Kristian Andre Galles (AKA User:Kristaga), 2006) / Public domain.
Image link: Wikipedia: File:Polaris alpha ursae minoris.jpg.
Local file: local link: polaris_ursa_minor_major.html.
File: Constellation file: polaris_ursa_minor_major.html.