Cosmic energy density ρ 1/4 vs redshift, z. Standard Model radiation (red), Δ field with Ω CDM =0.25 (blue), cosmological constant dark energy with Ω DE =0.7 (black dashed), and baryons with ...

Dark matter "lampshades" could slip between Earth and distant stars, causing tiny amounts of dimming that may help explain one of the greatest puzzles in science. Skip to main content.