D. Sluse

Astronomers measured the polarization of light from GSN 069—the direction in which its waves oscillate. The farther from the center, the more ordered the light became. This pointed to an extinguished active nucleus: the black hole once blazed brightly, and distant clouds still reflect its former bri

The JWST peered into the hearts of gravitational lenses — and found not a single smudge expected from lightweight dark matter particles. New data shut down many warm dark matter models and bolster the standard cold scenario. Limits on the half-mode mass and thermal relic mass are among the tightest