Comets & Asteroids Comet 17P/Holmes C/2014 Q2 Lovejoy C/2013 US10 (Catalina) C/2016 R2 (Panstarrs) 21P/Giacobini-Zinner 46P/Wirtanen Comet C/2018 Y1 (Iwamoto) Gault (6478) Interstellar Comet 2I/Borisov C/2017 T2 (Panstarrs) Comet C/2017 T2 (PANSTARRS) and the Perseus Double Cluster Comet C/2019 Y4 (ATLAS) – 2020/03/15 Comet C/2019 Y4 (ATLAS) – 2020/03/19 Comet C/2019 Y4 (ATLAS) – 2020/03/27 Comet C/2019 Y4 (ATLAS) – 2020/03/28 Comet C/2019 Y4 (ATLAS) – 2020/04/07 Comet C/2019 Y4 (ATLAS) – 2020/04/09 Comet C/2019 Y4 (ATLAS) – 2020/04/12 Comet C/2019 Y4 (ATLAS) – 2020/04/16 Comet C/2019 Y4 (ATLAS) – 2020/04/17 Comet C/2019 Y4 (ATLAS) – 2020/04/21 Comet C/2020 F3 (NEOWISE) – 2020/07/09 Comet C/2020 F3 (NEOWISE) – 2020/07/13 Comet C/2020 F3 (NEOWISE) – 2020/07/17 Comet C/2020 F3 (NEOWISE) – 2020/07/21 Didymos-Dimorphos 12P/Pons-Brooks 12P/Pons-Brooks colour C/2017 K2 (PanSTARRS) C/2023 A3 (Tsuchinshan–ATLAS) C/2023 A3 and the Milky Way