The first data release from ESA's Gaia mission

Indrek Kolka | 15.09.2016

On 14 September 2016 at 13:30 the first data release (DR1) from ESA's Gaia mission was made public.

GAIA kosmosteleskoop esimene andevalim 2016
GAIA's first sky map annotated

DR1 consists of high precision positional data on 1,1 billion sources (mostly stars of our Milky Way galaxy) collected by Gaia telescope between 25 July 2014 and 16 September 2015, in the first routine work-year of the full five-year-mission.

The preparations to the ambitious astronomy space mission started in the middle of 1990-ties, and Tartu Observatory has been participated in the Gaia Data Processing and Analysis Consortium since 2001. 

The previously unreachable precision of measurements allows to predict essential progress to be obtained in our understanding on the structure and evolution of the Milky Way galaxy. Based on the public DR1 new investigations have been started, and this process has been introduced by a few overview publications including Senior Research Fellow Indrek Kolka from Tartu Observatory as one of many co-authors.

Additional info: Indrek Kolka, indrek.kolka@to.ee