The Hubble tension: How magnetic fields could help solve one of the universe’s biggest mysteries

Two ways of measuring how fast the universe is expanding disagree, a puzzle known as the Hubble tension. Tiny magnetic fields ...
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Here is the most precise map of invisible dark matter

This is akin to drawing a precise map of what we cannot see: a team of astronomers has just established the finest representation to date of dark matter, this enigmatic component of the cosmos ...