Thomas Buchert

Researchers re-examined the Alcubierre warp drive model and found the bubble to be uncontrollable and unstable. By applying a more general mathematical approach and accounting for cosmic expansion, they saw that warp fields behave like cosmological flows. This paves the way for a stable superluminal

Using Cosmicflows-4++, scientists directly estimated relativistic corrections and found that curvature contributes about 10% to the expansion dynamics on scales up to 300 Mpc/h, while kinematic backreaction is negligible. This challenges the globality of ΛCDM and threatens systematic errors in cosmo