Artist's rendition of the binary star system Phi Persei, showcasing a massive, rapidly rotating star surrounded by a gas disk and a smaller companion star. The image illustrates the dynamic mass exchange between the two stars over millions of years, highlighting the complexities of stellar evolution.

Astronomy Picture from 02/10/1999

Phi Persei: Double Star

Source: https://apod.nasa.gov/apod/ap991002.html


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