  Since mid 2014 Gaia mission delivers daily millions of observations of the
whole sky. Among them we search for transient events, e.g., supernovae,
microlensing events, cataclysmic variables, etc. In my talk I describe the
near-real-time Gaia data processing pipeline for anomaly detection, show first
scientific results from years 2014/2015 and describe the organization of the
ground-based network for the photometric and spectroscopic follow-up of Gaia
alerts.

Instrumentation and Methods for Astrophysics;Cosmology and Nongalactic Astrophysics