Neutral hydrogen

Space Canadian radio telescope (CHIME) is turning hydrogen into a map of cosmic expansion

A faint hydrogen signal from a 5-billion-year-old universe emerged after astronomers stripped away overwhelming radio foregrounds.

Space MeerKAT detects a faint hydrogen signal from billions of years ago Joseph Shavit

Space The universe still has plenty of hydrogen, so why is it making fewer stars?Joseph Shavit

Space The Moon’s far side could open a window into the universe before the first stars were born Joseph Shavit