Original sentence: Recent observations of supernovae are consistent with a universe made up 71.3% of dark energy and 27.4% of a combination of dark matter and baryonic matter.Since then, these observations have been corroborated by several independent sources.The theory of large scale structure, which governs the formation of structure in the universe (stars, quasars, galaxies and galaxy clusters), also suggests that the density of matter in the universe is only 30% of the critical density.This so-called late-time Integrated Sachs-Wolfe effect (ISW) is a direct signal of dark energy in a flat universe, and has recently been detected at high significance by Ho et al.suggested that the expansion of the universe is accelerating
Edited sentence: A caveat should be kept in mind.If the FLRW metric (used as an assumption in the Friedmann equations - see below) is operative, recent observations of supernovae are consistent with a universe made up 71.3% of dark energy and 27.4% of a combination of dark matter and baryonic matter.If the FLRW metric and the Friedmann equations are fully operative in detail, this so-called late-time Integrated Sachs-Wolfe effect (ISW) has been interpreted as a direct signal of dark energy in a flat universe, and has recently been detected at high significance by Ho et al.Since then, these observations may have been corroborated by several independent sources, but only if the data are interpreted under the FLRW metric.The concept of dark energy is not a foregone conclusion: there is still room for debate.The theory of large scale structure, which governs the formation of structure in the universe (stars, quasars, galaxies and galaxy clusters), also suggests that the density of matter in the universe may be only 30% of the critical density.There are also other viable interpretations of general relativity besides the Friedmann equations.There other metrics that could be used in place of the FLRW metric that do not result in the conclusion of acceleration of the universe expansion rate nor in the necessity to invoke dark energy.suggested that the expansion of the universe may be accelerating