NASA’s Roman to peer into cosmic ‘lenses’ to better define dark matter

NASA’s Roman to peer into cosmic ‘lenses’ to better define dark matter
Dark matter affects how stars move within galaxies, how galaxies build up over time, and how everything in the universe is held together—but no existing tool has directly detected it. While dark matter does not reflect, absorb, or emit light, it can still be indirectly observed by telescopes.
phys.org
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