On Wednesday, three NASA astronomers released an analysis showing that several planned orbital telescopes would see their images criss-crossed by planned satellite constellations, such as a fully expanded Starlink and its competitors. While the impact of these constellations on ground-based has been widely considered, orbital hardware was thought to be relatively immune from their interference. But the planned expansion of constellations, coupled with some of the features of upcoming missions, will mean that at least one proposed observatory will see an average of nearly 100 satellite tracks in every exposure.

Making matters worse, some of the planned measures meant to minimize the impact on ground-based telescopes will make things worse for those in orbit.

Constellations vs. astronomy

Satellite constellations are a relatively new threat to astronomy; prior to the drop in launch costs driven by SpaceX’s reusable rockets, the largest constellations in orbit consisted of a few dozen satellites. But the rapid growth of the Starlink system caused problems for ground-based astronomy that are not easy to solve.

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Origianl Creator:
John Timmer

Original Link: https://arstechnica.com/science/2025/12/planned-satellite-constellations-may-swamp-future-orbiting-telescopes/
Originally Posted: Wed, 03 Dec 2025 16:26:32 +0000