Rolando Ligustri in Italy caught Comet C/2013 A1 Siding Spring passing nearly in front of M6 – sometimes called the Butterfly Cluster – in the tail of the constellation Scorpius on October 9. Professional astronomers recently announced the comet began losing brightness in September. But it is still beautiful, and still has a sweeping comet tail. Its close encounter with the planet Mars on October 19 – one week from today – is much anticipated.
Everything you need to know about the October 19 comet / Mars encounter
Bottom line: Comet C/2013 A1 Siding Spring near the star cluster M6 on October 9, 2014.
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