On the 19th of December 2013 Gaia Space Satellite was launched by European Space Agency. Its main goal is to measure proper motions and parallaxes of over 1 billion stars in Milky Way. However, ever since the first data has been acquired in 2014, Gaia has observed much more than that.
Up to this day its alerting system of sudden change in brightness of observed sources AlertPipe has detected around 18,000 transients.
More than 300 of them have been classified as microlensing candidates from all over the sky, with Gaia16aye, Gaia18cbf, Gaia19bld, Gaia19dke and Gaia20fnr as spectacular examples among them.