Two comets will be visible in the night skies this month Ars TechnicaWatch: Comet Blazes In The Sky In Rare Display The Weather ChannelClearing skies offers another chance to see comet over Boston area WCVB BostonBright Comet Tsuchinshan-ATLAS Climbs into Evening View Sky & TelescopeA rare comet last visible from Earth 80,000 years ago makes a return visit Colorado Public Radio