Comet Tsuchinshan-ATLAS—also known as comet A3 and C/2023 A3—could become visible to the naked eye in late September and mid-October. Here’s everything you need to know. Comet Tsuchinshan-ATLAS—also known as comet A3 and C/2023 A3—could become visible to the naked eye in late September and mid-October. Here’s everything you need to know. Science, /science, Innovation, /innovation, Science, /science, science, science, standard