Overview

• The new preprint led by Qi Lai models GW190521 as a brief echo from a collapsing wormhole, though the standard black‑hole merger remains the preferred explanation.
• Authors report the wormhole waveform fits the 2019 signal only slightly worse than a binary‑merger model, leaving the exotic scenario possible but unproven.
• A peer‑reviewed Physical Review Letters paper on GW250114 finds about 99% support for Hawking’s area law and tests consistent with a Kerr black‑hole remnant.
• LVK researchers highlight GW231123 as the most massive merger reported to date, with components of roughly 100 and 140 solar masses forming a ~225‑solar‑mass black hole that challenges formation models.
• Upgraded observatories and coordinated analyses have expanded the gravitational‑wave catalog, with LVK reporting a significant increase in available events for researchers.