The Scalar Intercepts by Michael Cassutt

The Scalar Intercepts by Michael Cassutt (Asimov’s SF, January-February 2024) is a brief bit of ideation more than a story, and one which sees an AI report back to other AIs about the seven hundred or so humans left alive on Earth (there had been a past conflict between the two). The AI then reveals a discovery:

My research shows that, in addition to these kinetic processes, Objects possess a consciousness of their own. Yes, the Sun, other stars, the major planets including our own, and minor planets above a certain mass, are beings as self-aware and intelligent as any we know.
Organics and even Agents like us reside on the short or micro side ofthe lifespan scale. These space-based beings are on the macro side, living millions of years, and their communications take place at such a slow rate—one bit a year, for example—that I have chosen to call them Scalar Sentiences.
My apparently radical discovery, based on extensive analysis and translation of the Scalar intercepts, a process that has consumed energy for the last four hundred and thirty years, confirms that Scalars are hostile to our existence. p. 161

The piece ends with the news (spoiler) that the Scalars have sent asteroid hurtling towards Earth and the AIs will not survive.
* (Mediocre). 1050 words.