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Astronomy

Reflection Nebulae

Reflection nebulae are clouds of gas and dust in space that are illuminated by nearby stars, causing the nebula to reflect the starlight and appear luminous. They are different from emission nebulae, which emit their own light due to ionization by nearby stars or other energy sources.

Reflection nebulae are usually blue in color, as the dust particles in the nebula scatter blue light more efficiently than other colors. The size and shape of reflection nebulae can vary widely, depending on the amount and distribution of gas and dust in the region, as well as the intensity and color of the illuminating star.

Iris Nebula - C4 - Caldwell 4 - NGC 7023 - vdB 139

Caldwell 4 – Iris Nebula

The Iris Nebula, also known as NGC 7023, is a reflection nebula located in the constellation Cepheus, characterized by its stunning blue hues and intricate, illuminated dust clouds ...
Messier 45, M45, The Pleiades

Messier 45 – The Pleiades

The Pleiades are an open star cluster composed of young, hot stars and visible in the sky as part of the Taurus constellation ...
NGC 6914, VdB 131, VdB 132

NGC 6914

NGC 6914 is a reflection nebula located in the constellation Cygnus that appears as a blue glow caused by the scattering of light from hot, young stars by the dust in the nebula ...

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