Mark McCaughrean @markmccaughrean@mastodon.social
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Another canary in the collapsing coalmine.

A paper today in Nature by Borlaff et al. on the impact of ever-increasing numbers of satellites in low-Earth orbit on space telescopes like Hubble, SPHEREx, & CHEOPS today, & Xuntian & ARRAKIHS in the future.

The number of proposed satellites is eye-watering, & the effects on astronomy horrendous – there are wider effects on pollution of the upper atmosphere & safety of key orbital assets as well.

nature.com/articles/s41586-025

Satellite megaconstellations will threaten space-based astronomy - Nature

Rapidly growing satellite constellations pose a substantial threat to astronomical observations, with projections indicating that future space telescopes will have more than 96% of their exposures affected by satellite trails, necessitating urgent mitigation strategies.

www.nature.com · Nature

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