Science ❯ Astronomy

Distance Measurement

Light Years Apogee Local Distance Network Lunar Laser Ranging Laser Ranging Light-Minutes Cosmic Distance Ladder Light Travel Time Type Ia Supernovae Lunar Distance Light Year Erdnahe Vollmond Light-years Intrinsic Luminosity Light-Day

Global Collaboration Pins Local Hubble Constant at 73.50 ± 0.81 km/s/Mpc With 1% Precision

The cross-checked result challenges simple measurement-error fixes to the Hubble tension.

Gemini South Releases New Butterfly Nebula Image for Observatory’s 25th Anniversary

The Moon Is Drifting Farther From Earth by 3.8 Centimeters a Year