How do we know how many galaxies there are in the Universe?
Why the open web links it
Ethan Siegel explains how scientists estimate the number of galaxies in the universe using data from the Hubble Space Telescope.
Linked by 3 independent sites, 3 of them widely read in the 2026-10 crawl of the open web, including bigthink.com, discovermagazine.com, scienceblogs.com.