Oldest stars found near Milky Way centre
Channel: ANU TV
Date: 11/11/2015

Astronomers have discovered the oldest stars ever seen, dating from before the Milky Way Galaxy formed, when the Universe was just 300 million years old. 

These stars from the cosmic dawn, found near the centre of the Milky Way, are surprisingly pure but contain material from an even earlier star, which died in an enormous explosion called hypernova.

The discovery and analysis of the nine pure stars challenges current theories about the environment of the early Universe from which these stars formed.