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==Properties and Structure==

==Properties and Structure==

Zeta-1 Scorpii (sometimes written as ζ¹ Scorpii) is a B&nbsp;type [[hypergiant star]] and part of the [[open cluster]] NGC&nbsp6231.<ref name=wikivisually>{{cite web|url=https://wikivisually.com/wiki/Zeta1_Scorpii|title=Zeta¹ Scorpii|accessdate=2019-08-30}}</ref> It is also a candidate [[variable star|luminous blue variable star]]. The star's surface is incredibly hot with a temperature of 21,000&nbsp;kelvin.<ref name=illinois/> Unsurprisingly for a hypergiant star, it it truly massive; it is thought to have a mass of 36 [[solar mass]]es though some sources place it at 60) and radius 103 times that of the Sun.<ref>

Zeta-1 Scorpii (sometimes written as ζ¹ Scorpii) is a B&nbsp;type [[Hypergiant|hypergiant star]] and part of the [[open cluster]] NGC&nbsp;6231.<ref name=wikivisually>{{cite web|url=https://wikivisually.com/wiki/Zeta1_Scorpii|title=Zeta¹ Scorpii|accessdate=2019-08-30}}</ref> It is also a candidate [[variable star|luminous blue variable star]]. The star's surface is incredibly hot with a temperature of 21,000&nbsp;kelvin.<ref name=illinois/> Unsurprisingly for a hypergiant star, it it truly massive; it is thought to have a mass of 36 [[solar mass]]es though some sources place it at 60) and radius 103 times that of the Sun.<ref>

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  |last1=Clark |first1=J. S.

  |last1=Clark |first1=J. S.