Sigma Scorpii punching its way through an ocean of hydrogen. (Geoff Healey)

Celestial hemisphere: Southern · Constellation: Scorpius (Sco) · Contains: 20 Sco) · Al Niyat (σ Sco · Alniyat I · The star Alniyat

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Sigma Scorpii punching its way through an ocean of hydrogen.

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Sigma Scorpii punching its way through an ocean of hydrogen.

SH2-9 / Gum 65 is both an emission and reflection nebula in the constellation of Scorpius. The emission component is the red hydrogen field surrounding the very bright Sigma Scorpii who is ionizing the central region with a bluish hue. Sigma Scorpii lies approximately 568 light years from us.Sigma Scorpii is actually a multiple star system. The system consists of a spectroscopic binary with components designated Sigma Scorpii Aa1 (officially named Alniyat the traditional name for the entire star system) and a Beta Cephei variable and Aa2; a third component (designated Sigma Scorpii Ab) at 0.4 arcseconds from the spectroscopic pair, and a fourth component (Sigma Scorpii B) at about 20 arc seconds. Courtesy Wiki

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Sigma Scorpii punching its way through an ocean of hydrogen.

Sigma Scorpii punching its way through an ocean of hydrogen.

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Sigma Scorpii punching its way through an ocean of hydrogen.

Sigma Scorpii punching its way through an ocean of hydrogen.

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