Webb Just Weighed a Black Hole Older Than Its Galaxy

JWST directly weighed a 50-million-solar-mass black hole just 700 million years after the Big Bang.

The black hole holds about two-thirds of its galaxy's total mass — outweighing every star around it.

Surrounding gas is almost pure hydrogen and helium, hinting it formed before the galaxy made stars.

Findings challenge the textbook idea that galaxies form first and black holes grow inside them.

It points to 'heavy seed' or primordial origins rather than slow growth from a dead star.