The Sun is basically a giant machine that takes invisible dark matter and makes it glow with gamma rays.
April 2, 2026
Original Paper
A Solar Probe of Dark Matter Decay in the Galaxy
arXiv · 2604.00091
The Takeaway
Dark matter is notoriously difficult to detect because it doesn't interact with light. This study show that the Sun's intense light field is so strong it can 'scatter' off passing dark matter particles, turning the Sun into a giant, natural magnifying glass that produces a visible halo of gamma rays.
From the abstract
Dark matter (DM) particles decaying in the Galactic halo can inject energetic $e^\pm$ that inverse-Compton scatter (ICS) solar photons into $\gamma$-rays, producing a diffuse and extended halo of emission around the Sun. We present the first quantitative study of this signal as an indirect probe of decaying DM. The intense solar photon field in the inner heliosphere amplifies the inverse-Compton emissivity by many orders of magnitude relative to the interstellar radiation field, making the Sun a