Cosmological Constant
A page on constants in our physics coverage, part of our science reporting, alongside the 3 reports filed on it so far.
Supernova analysis suggests dark energy may vary over time
A unified analysis of 2,884 Type Ia supernovae reveals evidence that dark energy may not be constant, challenging a core assumption of the standard...
NIST's Decade-Long Gravitational Constant Experiment Deepens Disagreement Over Big G
A ten-year NIST experiment has produced a new measurement of the gravitational constant, big G, that differs from a leading 2007 result.
Einstein's Abandoned Cosmological Constant Makes a Comeback in Cosmology
A century-old concept, once dismissed by Einstein, has been revived to explain the accelerating expansion of the universe.