Back to today’s briefing

Story perspectives

NIST Publishes New Big G Value After Decade, Discrepancy Unresolved

4/24/2026

24 3 Full Breakdown

Summary

Story summary

NIST scientists announced new measurements of the gravitational constant (Big G) in Metrologia.
They spent ten years replicating a recent experiment that yielded a highly divergent Big G value.
The result adds a data point but leaves the discrepancy of roughly one part in 10,000 unresolved.
Earth’s background field creates laboratory noise, keeping Big G far less precise than other constants.

1 of 1

Story summary

NIST scientists announced new measurements of the gravitational constant (Big G) in Metrologia.
They spent ten years replicating a recent experiment that yielded a highly divergent Big G value.
The result adds a data point but leaves the discrepancy of roughly one part in 10,000 unresolved.
Earth’s background field creates laboratory noise, keeping Big G far less precise than other constants.