خانه / بایگانی برچسب: Ultraviolet radiation

بایگانی برچسب: Ultraviolet radiation

The Crescent Nebula – NGC 6888

The Crescent Nebula, also known as NGC 6888, is a nebula lighted up by a central Wolf-Rayet star, WR 136, whose ultraviolet radiation is responsible for heating and ionising most of the material ejected by the star during previous evolutionary …

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The star cluster Pismis 24

The star cluster Pismis 24 lies in the core of the large emission nebula NGC 6357 that extends one degree on the sky in the direction of the Scorpius constellation. Part of the nebula is ionised by the youngest (bluest) …

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Messier 78

 Messier 78 is a fine example of a reflection nebula. The ultraviolet radiation from the stars that illuminate it is not intense enough to ionise the gas to make it glow — its dust particles simply reflect the starlight that …

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Cone Nebula, NGC 2264

Resembling a nightmarish beast rearing its head from a crimson sea, this monstrous object is actually an innocuous pillar of gas and dust. Called the Cone Nebula (NGC 2264) — so named because, in ground-based images, it has a conical …

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Tulip Nebula

Framing a bright emission region this telescopic view looks out along the plane of our Milky Way Galaxy toward the nebula rich constellation Cygnus the Swan. Popularly called the Tulip Nebula the glowing cloud of interstellar gas and dust is …

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