Home » News & Blogs » Identifying the Sun’s Siblings
Bookmark and Share
Centauri Dreams

Identifying the Sun’s Siblings

19 Apr 2018, 14:17 UTC
Identifying the Sun’s Siblings European Space Agency & NASA Acknowledgements: Davide De Martin (ESA/Hubble) and Edward W. Olszewski (University of Arizona, USA)

With TESS going into a 60-day period of calibration and testing, I’ll turn this morning to a different kind of survey. GALAH is an acronym for Galactic Archaeology, a term I’ve generally associated with so-called Dysonian SETI, where data is mined in a search for signs of advanced engineering or any anomalies that could signify an extraterrestrial civilization at work. But GALAH has a different object: It has examined some 340,000 stars enroute to 1 million.

A just published paper on GALAH states the goal succinctly:

The overarching goal of the GALAH survey is to acquire high-resolution spectra of a million stars for chemical tagging, in order to investigate the assembly history of the Galaxy.

Latest Vodcast

Latest Podcast

Advertise PTTU

NASA Picture of the Day

Astronomy Picture of the Day

astronomy_pod