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'''Alpha Herculis''' is a red supergiant star located in the constellation Hercules. It is a [[variable star]], meaning that its brightness changes rather then being constant. It is about 400 light years from the [[sun]].<ref>https://www.universeguide.com/star/rasalgethi</ref>
'''Alpha Herculis''' is a red supergiant star located in the constellation Hercules. It is a [[variable star]], meaning that its brightness changes rather then being constant. It is about 400 light years from the [[sun]].<ref>https://www.universeguide.com/star/rasalgethi</ref>
==References==
==References==
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