alb10694872

Emission nebula IC 4606

Emission nebula IC 4606 (centre left, brown). This emission nebula surrounds the red giant star Alpha Scorpius (Antares, yellow, lower left). At centre right is globular cluster M4 (NGC 6121). Globular cluster NGC 6144 is near centre, obscured by the nebula. At top right is the star Sigma Scorpius, another star in the constellation of Scorpius. A nebula is a cloud of gas and dust in space, many light years across. It is called an emission nebula when the hydrogen gas is ionised, emitting red light. The hydrogen gas is being ionised by Antares. Globular clusters are balls of hundreds of thousands of stars. They are much more distant objects than these nearby bright stars.
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Title:
Emission nebula IC 4606
Caption:
Emission nebula IC 4606 (centre left, brown). This emission nebula surrounds the red giant star Alpha Scorpius (Antares, yellow, lower left). At centre right is globular cluster M4 (NGC 6121). Globular cluster NGC 6144 is near centre, obscured by the nebula. At top right is the star Sigma Scorpius, another star in the constellation of Scorpius. A nebula is a cloud of gas and dust in space, many light years across. It is called an emission nebula when the hydrogen gas is ionised, emitting red light. The hydrogen gas is being ionised by Antares. Globular clusters are balls of hundreds of thousands of stars. They are much more distant objects than these nearby bright stars.
Credit:
Album / Science Source / CHRIS COOK
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Image size:
3067 x 2188 px | 19.2 MB
Print size:
26.0 x 18.5 cm | 10.2 x 7.3 in (300 dpi)
Keywords:
4606 6121 6144 ALPHA ANTARES ASTRONOMIA ASTRONOMICAL ASTRONOMY CLUSTER CLUSTERS COSMOS ÉMISSION GLOBULAR HII IC M4 NEBULA NEBULAE NGC NIGHT OPTICAL OUTERSPACE REGION SCORPIUS SIGMA SKY SPACE (COSMOS) SPACE SPATIAL STAR STARS TELESCOPE UNIVERSE