Air pollution is the largest environmental health risk in Europe and significantly impacts the health of the European population, particularly in urban areas.

Following on from the Sentinel-5P satellite – the first Copernicus mission dedicated to monitoring our atmosphere – the Sentinel-4 and Sentinel-5 missions will take current air quality measuring capabilities to the next level.

Together, the Sentinel-4 and -5 missions will provide information on atmospheric variables in support of European policies. This will include the monitoring of air quality, stratospheric ozone and solar radiation, and climate monitoring.

This video features interviews with Giorgio Bagnasco, Sentinel-4 Mission Project Manager,

ESA’s Gaia space telescope has further disentangled the history of our galaxy, discovering two surprising streams of stars that formed and wove together over 12 billion years ago.