Science ❯ Astronomy ❯ Galaxies

Gravitational Lensing

Einstein Ring Carousel Lens Einstein Rings Star Formation James Webb Space Telescope Question Mark Galaxy Abell 370 Strong Gravitational Lenses Cosmic Horseshoe Cosmic Time Light Paths Role MACS-J0417.5-1154 MACS J0417.5-1154

Gravitational-Lens Time Delays Deliver New Hubble Constant, Deepening the Tension

A TDCOSMO analysis of eight lensed quasars measures 71.6 km/s/Mpc with 4.5% precision, pointing to larger samples to reach decisive 1–2% tests.

36-Billion-Solar-Mass Black Hole Confirmed in Distant Cosmic Horseshoe Galaxy