A global survey of physicists revealed surprisingly little consensus on fundamental physics questions, with no majority supporting the standard cosmological model, leading dark matter explanations, or any single quantum gravity theory. However, 68% agreed the Big Bang does not necessarily represent time's beginning. Researchers interpret the divisions as evidence that physics frontiers remain genuinely unsettled and alive.
Planck units are a system of measurement defined by four universal physical constants (c, G, ħ, kB) that yield a value of 1 when expressed in these units, originally proposed by Max Planck in 1899. The Planck scale refers to extreme regimes of space, time, and energy where quantum gravity dominates and standard physics models break down, such as conditions in the first fractions of a second after the Big Bang.