So today’s APOD describes Spica as bright bluish.  Well you’re slowly getting there guys, eventually you’ll cotton on.  If you check out the negativity of the B-V index you’ll find that Spica is in fact the 3rd bluest star in the entire sky after Zeta Puppis and S Monocerotis – it is actually the brightest star of all 3.  So Spica is the brightest (very) blue star up there.  Maybe you’ll get it right 3rd time around?  Have you actually even seen Spica through binoculars or a low power telescope?  You can’t have I guess as it looks like a celestial sapphire blazing away with a deep blue hue.

 

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