Tree rings reveal the dark history of our star. The implications for the future are deeply unsettling.

Coronal loops arc over the surface of the Sun, shortly after a solar flare erupted. Credit: NASA/GSFC/TRACE. Image shared under CC BY 2.0.

And other news from space and physics this week

Hubble captures a smoky dying star. Image credit: ESA/Hubble & NASA, T. Ueta, H. Kim; CC BY 4.0

A swarm of tiny black holes could flood the cosmos — and explain one of the deepest mysteries of modern physics.

The black hole at the heart of M87. Credit: Event Horizon Telescope Collaboration.

Once I studied physics and distant galaxies. Now I fly satellites instead, and spend my time thinking and writing about trends in space and technology.

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