Comet last seen in stone age to make closest approach to Earth The GuardianComet A3: How to see the ‘comet of the century’ as it passes Earth EuronewsHow to see Comet A3 streak across the sky this month WTOPBright comet Tsuchinshan-ATLAS could be visible without a telescope for the 1st time in 80,000 years. Here’s how to see it this week. Livescience.comHow to spot Comet Tsuchinshan-Atlas The Planetary Society