Around the Equinox, Observatories Throw Whole Nights of Scratched Images, and What Goes Through Their Field Is neither an Airplane nor a Meteor

SciencePost

Factuality

Ownership

Around the September equinox, satellites in low orbit remain lit much longer after dusk, creating light drags that scratch images from professional telescopes. This seasonal phenomenon forces astronomers to throw whole nights of observation in the basket. Technical solutions and international coordination are now trying to mitigate this impact on astronomical research. More