Computer-generated Venus SCIEPRO/SCIENCEPHOTO LIBRARY imageWhen a comet approaches the sun from the outside solar system, it might leave a trail of dust particles on Venus as it passes through the inner reaches.Comet C/2021A1 (Leonard), will pass Venus on 18 December at a distance of just 4.3million kilometres. It will continue on its orbital path and pass through an area of space that is close to the spot where it was 72 hours ago.Computer
