“Beyond the limit”: Satellites and space mirrors threaten the night sky

The European Southern Observatory warns that the growing number of satellites, together with potential large reflective structures in space, could increasingly affect the night sky and ground-based astronomy. The concern is not limited to individual satellite trails: larger constellations and highly reflective surfaces may create more frequent streaks or bright reflections across observations. The Hacker News discussion received 190 points and 319 comments, highlighting tensions among commercial space expansion, regulation, and access to an unobstructed scientific sky. The available source metadata does not provide the ESO article’s detailed measurements or mitigation commitments.