The Orion Nebula (M42) is a hotbed of star formation.
George Greaney
In the December 2010 issue, I wrote about star formation (“How stars form,” page 26). The article talks about how these objects get to the main-sequence state — where they fuse hydrogen to create helium. So after they reach this point, what’s happening within them?
![Albireo (Beta [β] Cygni) is a classic example of a double star with contrasting colors.](https://www.astronomy.com/uploads/2024/08/Albireo.jpg)
