News

Astronomers confirm faintest early-universe galaxy ever detected

20 May 2016 Astronomy Now

An international team of scientists has detected and confirmed the faintest early-universe galaxy ever using the ten-metre Keck II telescope on the summit on Maunakea, Hawaii. The team analysed three separate images of the object gravitationally lensed by a foreground galaxy cluster, revealing the distant galaxy as it was 13 billion years ago.

News

Fossil globular star clusters reveal their age

28 July 2015 Astronomy Now

Using a new age-dating method and the W. M. Keck Observatory, an international team of astronomers have determined that globular star clusters formed in two distinct epochs — 12.5 and 11.5 billion years ago. They formed alongside galaxies, rather than prior to galaxies, as previously thought.