Measurement programme
SH0ES
The programme that measures the Hubble constant from the local distance ladder — anchoring Cepheids with parallax, using them to calibrate Type Ia supernovae, and reading the expansion rate from supernovae in the smooth Hubble flow. Its value comes out consistently higher than the one inferred from the early universe, and that gap is the Hubble tension.
Highlights
- ›The local-ladder measurement at the heart of the Hubble tension
Methods, objects & facilities
Knowledge connections
- Associated withThe Cosmic Distance Ladder
- Associated withThe Cepheid Distance Scale
- Associated withType Ia Supernova
- Associated withThe Hubble Constant
- Associated withThe Hubble Tension
- Associated withHubble Space Telescope
Sources
The primary and reference sources this topic draws on.
- STScISpace Telescope Science Institute
Science operations and public image archives for the Hubble and James Webb space telescopes (MAST, HubbleSite, webbtelescope.org).
Hubble/Webb images released by NASA/STScI are generally free to use with a credit line; each item's terms are checked before use.