News 2019


20/03/2019 Updated: DPAC Services are back up

Due to some network issues at ESAC, some Gaia DPAC services like Gaia Jira, Gaia SVN and Nexus are down. We are working on this and hope to get our services back up soon. Update: all services are back up.


14/03/2019 Cosmos mailing lists: issue fixed now.

On Thursday 7 March around 18:00 we switched the Cosmos system to the new Liferay 7 version. This switch had an unexpected effect on the population of the Cosmos mailing lists. The population of these mailing lists was not stable since the switch and it is unclear which mailing lists were affected and which ones not. Personal email addresses were not affected, only mailing lists were affected.

However, the emails sent out to the lists in the past week may not have arrived properly. If it arrived with some people, it might not have arrived with all people. So do not assume your email reached the full list because you got a reply to it.

ACTION NEEDED for emails sent between Thursday 7 March 18:00 CET and Wednesday 13 March 13:00 CET.

-Please resend important emails you sent out to any Gaia mailing list ending with Do this only if you initiated that email (so if you sent that email originally).

-If you used a mailing lists with, the above is valid as well ( is forwarded to Then correct your address book to replace all mailinglists ending with into

SUGGESTION for long threads:

-Resend only the latest email which contains the full conversation thread to minimize emails send around.

Our apologies for the inconvenience. This issue was solely caused by the Cosmos portal migration so there is no reason to think this will happen again any time soon


11/03/2019 Issues with Cosmos mailing lists

Currently we are investigating an issue with the population of Cosmos mailing lists. Not everyone of a team used to populate a Cosmos mailing list receives the email sent. You might need to resend emails at a later stage to the mailing list. We hope to solve this problem soon and will send around an email once mailing lists are again working as expected.


06/03/2019 With sadness we announce the passing of Jordi Torra

It is with great sadness that we learned of the passing away of Prof. Jordi Torra on February 26 2019. Jordi was one of the important movers of Gaia and in particular DPAC. His leadership of the early prototype for a Gaia data processing system and his community organizing efforts in Spain led to the many invaluable Spanish contributions to DPAC.

Jordi and the positive spirit in which he always approached any difficulties encountered along the way to make Gaia and DPAC happen will be very much missed. An obituary has been written by the Gaia team in Barcelona.


04/03/2019 Downtime for DPAC services and Gaia Cosmos

We are planning to migrate our Cosmos webpages to a new version of software, and at the same time, we will apply some patches for all services like Jira, Helpdesk and Wiki. This requires some downtimes.

On Wednesday 6 March from 16:00 to 19:00 CET most DPAC services will be down. Applications affected will be the Gaia Jira, Gaia Wiki and Gaia Helpdesk.

On Thursday 7 March, the Cosmos portal will be in maintenance from 8am CET for 30 minutes and thereafter frozen the entire day. This means that we will not be able to add news or updates on the website. Also, all portlets will be deactivated.

So on 7 March, you will not be able to use the Gaia people finder, Gaia people editor, any of the forms deployed on Gaia Cosmos nor the document numbering tool. The downtime also affects the self-registration tool or your ability to subscribe / unsubscribe from the Gaia newsletter.

The downtime on 7 March will not affect the DPAC services and you should be able to use Gaia Jira, Gaia Wiki, Gaia Helpdesk, SVN, etc. without any problems.


22/02/2019 Update to the Gaia DR2 known issues

Today an update to the Gaia DR2 known issues was published discussing Gaia DR2 photometry. We advise you to read through this topic if you use Gaia DR2 photometry.


15/02/2019 Opening for a software developer in the Gaia Barcelona research team

The Gaia team of the Universitat de Barcelona (IEEC – ICCUB) has an opening for a software developer. This team is involved in the simulations and data processing of astrometric and photometric data from the Gaia satellite, and is responsible of the Barcelona Data Processing Center, located in the Marenostrum supercomputer.

More information on this vacancy can be found here.


01/02/2019 Scientific programme of "The Gaia Universe" announced

The scientific programme of the 53rd ESLAB symposium 'the Gaia universe' is now online. Participants taking part in the pitch sessions can also review the schedule here. Next to oral presentations and pitch sessions, two poster sessions are held.


31/01/2019 Update to Gaia DR2 known issues page on radial velocities

Today on ArXiv a paper appeared by Boubert et al.  describing potential contamination of radial velocities in crowded regions. A summary has been added to our Gaia DR2 Known Issues page, along with links to the paper and the accompanying data. The page also describes other topics like astrometry and crossmatches, and complements the Gaia DR2 data release documentation.


29/01/2019 Gaia Data Release 3 split into two parts

The Gaia data processing toward Gaia DR3 is progressing at full speed. Although the schedule has stabilised, there are several uncertainties as many elements of the pipelines will see the real data in an operational environment for the first time. Taking the uncertainties into account brought the schedule of the next release toward the end of the earlier announced period of the first half of 2021.

To mitigate the impact on research, the Gaia DR3 will be split into two releases. This way, data that is ready earlier, will be released earlier. The early release, Gaia EDR3, contains astrometry and (integrated) photometry i.e. positions, parallaxes, proper motions, G-band fluxes as well as integrated red- (RP) and blue-band (BP) fluxes, all based on 34 months of data resulting in better accuracy with respect to Gaia DR2. First results for a predefined list of quasars and extended objects may also be included already in the early release. Gaia EDR3 will take place in Q3 of 2020.

Gaia DR3, which is anticipated to take place during the second half of 2021, will supersede Gaia EDR3. This means that the source list and any data published in Gaia EDR3 will not change, but is simply copied to Gaia DR3. Therefore Gaia DR3 is based on the same 34 months of mission data as for Gaia EDR3. The additional products include:
- radial velocities (significantly more due to fainter magnitude limit),
- BP/RP/RVS spectra (new products),
- Solar system data (significantly more sources included),
- variability information (significantly more objects due to longer time interval),
- results for non-single stars (new products), and
- astrophysical parameters (based on spectra).
The final inclusion of the products into Gaia DR3, as well as Gaia EDR3, is subject to successful validation.


21/01/2019 Gaia newsletter

An email was sent out recently to Gaia newsletter subscribers with instructions on how to keep receiving the Gaia newsletter. These instructions are explained on this page in more detail, with some answers to frequently asked questions.


08/01/2019 update: Gaia Archive is fully accessible now

There were some issues when accessing the Gaia Archive earlier today, but these have been fixed now.


29/12/2018 Movement of tiny galaxies surrounding the Milky Way

New animation shows the movement of tiny galaxies surrounding the Milky Way as described in a recent story. An interactive version is available here.



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