Astrophotography from Boulder, Colorado
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Galaxies
The universe is mostly empty space, populated by scattered galaxies. The galaxies presented here range from 2 to 500 million light years distant.
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Nebulae
Nebulae are clouds of gas - mainly hydrogen, with traces of common elements such as oxygen, sulfur and nitrogen. They are the birthplace of future generations of stars.
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Star Clusters
Most stars are members of a cluster for at least part of their lives. Clusters vary from sparse young open clusters to dense ancient globular clusters.
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Solar System
The solar system includes planets, moons, comets, and the Sun itself.
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Galaxies
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Nebulae
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Star Clusters
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Solar System
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