A spectroscopicbinary star, 245 light-years from Earth, one of the brightest stars in the sky and the brightest star in the constellation Virgo.
一种用分光镜观察的距地球245光年双星，是天空中最亮的恒星之一，也是处女座中最亮的星星。
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In addition, spectroscopic observations with ground-based telescopes further reveal that one of the stars is actually a tight binary that is too compact to be resolved even by Hubble.