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Keith Smith
drkeithsmith.bsky.social
did:plc:wxe224kl2yklhrpj2friwiue
Strong gravitational lensing can produce multiple images of the same source, with time delays between them. If a supernova occurs in a lensed galaxy, those delays can constrain the expansion rate of the Universe.
Feature by @danclery.bsky.social in @science.org. ☄️🔭🧪⚛️
https://www.science.org/content/article/how-fast-universe-expanding-cosmic-illusions-may-hold-answer
2026-04-08T15:21:38.894Z