ESO Top News

On this Earth Day, we reflect on the importance of protecting our planet for future generations. Understanding the Earth system and the complex interactions that shape our planet is paramount for addressing environmental challenges, mitigating climate change, preparing for natural disasters, managing resources sustainably and conserving biodiversity.

Each component of the Earth system – from the atmosphere and oceans to land surfaces and ice sheets – influences and interacts with one another in complex ways. ESA works all-year round to provide satellite data to monitor the health of our planet. Here are 10 examples of how Earth’s systems intertwine and how satellite measurements are key to understanding these complex processes.

Week in images: 15-19 April 2024

Discover our week through the lens

ESA will work closely with the EU to use space to improve life on Earth, following an agreement signed today by ESA Director General Josef Aschbacher (left) and the European Commission’s Director-General for Defence Industry and Space, Timo Pesonen.

Astronomers recently used a trove of archived images taken by the NASA/ESA Hubble Space Telescope to visually snag a largely unseen population of smaller asteroids in their tracks. The treasure hunt required pursuing 37 000 Hubble images spanning 19 years. The payoff was finding 1701 asteroid trails, with 1031 of those asteroids uncatalogued. About 400 of these uncatalogued asteroids are about below a km in size.

As humans exert greater pressure on natural processes, understanding the intricate workings of our Earth system is increasingly vital for effective action on mitigation and adaption strategies. ESA’s Earth Explorer missions yield a wealth of astonishing findings, serving as the bedrock of scientific research in this field. Now, four new concepts have been selected to undergo assessment study, one of which is destined to be the twelfth in this family of world-leading satellite missions.