APOD 3.4

"stellar nurseries" takes you to a site about star formation.
"lie at the edge" takes you to a site with information about this "cloud."
"This breath-taking view" takes you to a site with the picture above.
"Great Orion Nebula," takes you to Wikipedia with information about about this nebula.
"also includes" takes you to skyfactory with more pictures of this nebula.
"hydrogen alpha" takes you to an APOD entitled "Hydrogen and Dust in the Rosette Nebula."
"Barnard's Loop" takes you to an APOD entitled "Barnard's Loop around the Horsehead Nebula."
"nebula-rich" takes you to an APOD entitled "The Orion Deep Field."