Rare comet visible in the night sky won’t return for 80,000 years The HillMassive comet will be visible to naked eye. Here’s where to look tonight in Massachusetts. CBS BostonRare comet to streak across night sky. Here’s how you can see it NPRThis Week’s Sky at a Glance, October 11 – 20 Sky & TelescopeHopes dim for another bright October comet after Tsuchinshan-ATLAS Space.com