A glow in the night sky or around your observing site caused by artificial light. It greatly reduces how many stars you can see. Special light-pollution filters can be used with your telescope to improve the visibility of celestial objects.
China set to retrieve Martian soil samples by 2030
China set to retrieve Martian soil samples by 2030 by Simon Mansfield Sydney, Australia (SPX) Apr 26, 2024 China is...