Massive disk found in early universe challenges galaxy formation theories

A massive, rotating disk galaxy designated DLA0817g and nicknamed the "Wolfe Disk," formed just 1.5 billion years after the Big Bang. It was discovered using ALMA, the Atacama Large Millimeter/submillimeter Array in Chile. -- Full Story: https://www.space.com/wolfe-disk-massive-galaxy-discovery.html Credit: NRAO/AUI/NSF, S. Dagnello