A schematic of the HERMES instrument showing the light path of how star light from the telescope AAT is split into four different channels. Credit: The Australian Astronomical Observatory (AAO)
An Australian-led group of astronomers working with European collaborators has revealed the “DNA” of more than 340,000 stars in the Milky Way, which should help them find the siblings of the Sun, now scattered across the sky. This is a major announcement from an ambitious Galactic Archaeology survey, called GALAH, launched in late 2013 as part of a quest to uncover the formulation and evolution of galaxies. When complete, GALAH will investigate more than a million stars.
The GALAH survey used the HERMES spectrograph at the Australian Astronomical Observatory’s (AAO) 3...
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