Professional radio astronomy - SKA et al.
replyeg: Scientists analyze 76 million radio telescope images, find Starlink satellite interference 'where no signals are supposed to be present' (2025)
~ https://www.space.com/astronomy/scientists-analyze-76-millio...
and the topic is Starlink (and other sat constellations) and their impact on the sky (visible and non visible).
The message I responded to was about visible light:
reply"Will this be the last generation to remember the night sky?"