Regulators need to crack down, astronomers say in a series of new papers.
of the night sky planned to start in 2024 at the Vera Rubin Observatory in Chile. Data from the survey is expected to yield new insights into how the Milky Way was formed, the properties of dark matter and dark energy, and even the trajectories of asteroids that could potentially be headed toward Earth. But the observatory’s discoveries could be impeded by the proliferation of satellites, according to the paper.
Light reflected by objects in low Earth orbit would increase the background brightness for the study by 7.5 percent by 2030 compared to an unpolluted night sky. That interference could cause the project’s costs to balloon by nearly $22 million, the researchers found. That’s because, with a brighter night sky, researchers have to increase exposure times to spot faraway objects. And scientists might miss more faint objects in a brighter sky, the paper warns.
Photobombing satellites are another growing problem for astronomers. Satellite trails appeared in 2.7 percent of images taken with an 11-minute exposure time by the Hubble telescope between 2002 and 2021, according to anotherpublished in the same journal earlier this month. That figure could rise to as much as 50 percent of images by the 2030s.
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