satellite constellations

Space law experts say the U.S. Federal Communications Commission can approve massive spaceflight projects on its own, even ones that could permanently alter the view of the night sky for the entire world. Critics have raised concerns about these projects, but experts note there is very little other regulatory oversight capable of stopping them, concentrating the decision in one agency's hands.

An astronomer is tracking the gradual orbital decay of Starlink satellites to measure density variations in the upper atmosphere, effectively turning the satellite constellation into a global 'planetary barometer'. The approach exploits how satellites sink faster when the thermosphere thickens, offering dense atmospheric data from thousands of spacecraft. Readers are debating the ingenuity of repurposing satellites many astronomers consider a nuisance for observational science.