"A small, dark nebula, like the Horsehead, is a nursery bustling with star births. Here’s why: the cloud is super dense with grains that block the light behind it, and that dense matter can easily clump into protostars that form stars."
From Earth, the horse’s head is visible by telescope near Orion's belt. But remove that equine silhouette—using an infrared lens—and the nebula’s bright, blue babies pop into view. This nursery has many stars in the process of birth.
Generator Unlocked
Sigma Orionis
This brightest light in the nebula is what lets us see it at all. A quintuple star system bathes the clouds in UV light. Sigma Orionis A and B are an orbiting pair of blue main sequence stars; C, D, and E will one day venture off as solo stars.
Stellar Nursery
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Requires
Pistol Nebula
The Pistol Nebula features a young, blue hypergiant much hotter and more luminous than the red hypergiant VY Canis Major. Pistol Star shines so brightly that, despite being near the center of the Milky Way, it would be visible to our eyes if dust weren’t in the way.
Horsehead Nebula Rank 3
Star Stuff
Astronomer Carl Sagan said, “We are made of starstuff.” Seven octillion atoms in your body form 60 elements that were fused in the bellies of stars that died and recycled in nurseries like the Horsehead. At each rebirth, the chemical stew grows richer.