Published 6 days ago • loading... • Updated 5 days ago
Astronomers Discover Another Galaxy Seemingly Devoid of Dark Matter
Researchers measured DF9’s stars and found a mass of 100 million suns, matching visible matter alone and strengthening the case for a rare no-dark-matter galaxy.
A galaxy appears to be missing the invisible substance thought to hold such objects together, further challenging long-held assumptions about how galaxies form