Physics

• Physics · 13 October 2026

  Across 750 million light-years, galaxy groups fall together as Newton predicts

  Tiny imprints in the Big Bang's afterglow show pairs of galaxy groups drifting toward each other in the way an inverse-square law predicts, at distances never tested before. The measurement pins the exponent to within about 15%, not "almost exactly". It tests how gravity fades with distance, not how strong it is, and it does not settle whether dark matter or modified gravity explains the universe's missing mass.

  Shape: Promising, close to EarlyMOND: EarlyPopular claim: Overstated
• Physics · 8 October 2026

  A reanalysis of ten isotope systems points to Earth's inner Solar System origins

  Two ETH Zurich scientists reanalysed published meteorite data and found that lines fitted through inner-Solar-System meteorites predict Earth's rock in all ten isotope systems they checked, once the predictions are combined. No new samples were measured. The study leaves room for up to about 2% of Earth to have come from farther out, and the paper makes no claim about where the oceans came from. The water line came from the university's release.

  Pattern: Promising, close to EarlyInner-only origin: EarlyCap on Earth's mass: Early, close to Speculative