Credit & Copyright: Bray Falls
Explanation:
What energizes the Heart Nebula?
First, the large emission nebula dubbed
IC 1805 looks, in whole, like a human heart.
The nebula glows brightly in red light
emitted by its most prominent element:
hydrogen.
The red glow and the larger shape are all powered by a
small group of stars near the
nebula's center.
In the center of the
Heart Nebula are young stars from the open star cluster
Melotte 15
that are eroding away several picturesque
dust pillars with their
energetic light and winds.
The open cluster of stars contains a few
bright stars nearly 50 times the mass of our
Sun,
many dim stars only a fraction of the mass of our Sun, and an
absent microquasar
that was expelled millions of years ago.
The Heart Nebula is located about 7,500 light years away toward the
constellation
of Cassiopeia.
Coincidentally, a small meteor was captured in the foreground during imaging
and is visible above the dust pillars.
At the top right is the companion
Fishhead Nebula.
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Heart Nebula - emission nebula - emissionnaya tumannost'
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