SATELLITE MEGACONSTELLATIONS THREATEN NIGHT SKY VIEWING EXPERIENCES. Urban dwellers often see a limited number of stars in the night sky, obscured by artificial lights. However, as satellite megaconstellations proliferate, led by SpaceX’s Starlink program, this view faces further degradation. SpaceX launched its first batch of Starlink satellites in 2019, prompting concerns from astronomers about light pollution and interference with both optical and radio telescopes. The International Astronomical Union established a center to address these issues, yet progress has been slow, with SpaceX’s initial mitigation efforts proving ineffective. The rise of satellites, which could contribute to the Kessler effect, presents long-term environmental concerns as old satellites re-enter the atmosphere, leaving debris behind. With SpaceX planning 42,000 satellites and other countries proposing similar initiatives, the balance between commercial interests and astronomical research becomes increasingly precarious. Experts warn that without public awareness and regulatory action, the impact of satellite pollution on scientific inquiry and cultural appreciation of the night sky may worsen. (CBC)