Gaia in the UK

Taking the Galactic Census


Amateur astronomers


On this page you can find the list of recent Gaia Alerts which are suitable for observing with a small telescope.

Gaia in space


Discover how to observe Gaia Alerts yourself or with your school.

Gaia rogues gallery


Find out more about the people and organisations behind Gaia and the Alerts.

SNIa: artist's impression

What and Why

What are Gaia Alerts? Why are we looking and what do we hope to find?

Gaia liftoff


See some images from the Gaia Alerts project.

The full list of all Gaia Science Photometric Alerts can be found at The full list is also avaialble for download in CSV format from or you can download a copy from Alerts CSV page on this website. The alerts published during the validation phase (before July 2015) are also listed on the Gaia Photometric Science Alerts: Validation Phase page.

Visit Tools page on the gsaweb website for a range of tools.

Gaia Alerts detections video

This is a movie showing Gaia Alerts detections over time (published before 14 November 2018) on the Gaia Data Release 2 sky map. (Credits: Sergey Koposov (video), ESA/Gaia/DPAC and the Photometric Science Alerts Team.)