ERS-2, the ESA satellite, safely reenters Earth’s atmosphere
ESA’s second European Remote Sensing (ERS-2) satellite has completed its mission and reentered Earth’s atmosphere over the North Pacific Ocean, marking the end of a successful era in Earth observation. Launched nearly three decades ago on 21 April 1995, ERS-2, along with its predecessor ERS-1, has provided invaluable data that revolutionized our understanding of the Earth’s system.
Over its operational lifetime, ERS-2 has gathered long-term data on various aspects of our planet, including land surfaces, ocean temperatures, ozone layer, and polar ice extent. These comprehensive datasets have played an important role in advancing scientific knowledge and have paved the way for many of the Earth observation satellites that we rely on today.
To ensure the safe disposal of the satellite, ESA utilized its last remaining fuel to lower ERS-2’s altitude from 785 km to 573 km. This action significantly reduced the risk of collisions with other satellites and space debris. As a result, the reentry was entirely natural, driven solely by unpredictable atmospheric drag. Unfortunately, this meant that no control over ERS-2 was possible during this phase.
Despite this limitation, ERS-2 has left an extraordinary legacy of data that continues to drive scientific progress. Its contributions have not only shaped our understanding of Earth’s system but have positioned ESA at the forefront of Earth observation. The mission’s success has inspired future generations of satellites and reinforced ESA’s commitment to advancing space science.
The reentry of ERS-2 aligns with ESA’s broader initiatives to ensure the long-term sustainability of space activities. With the Clean Space initiative, ESA aims to develop new technologies for more sustainable space missions in collaboration with the wider European space community. This initiative seeks to minimize the environmental impact of space activities and promote responsible practices.
Additionally, ESA’s Zero Debris Approach takes further measures to reduce space debris left in both Earth and lunar orbits by future missions. By implementing strict guidelines and protocols, ESA is actively working towards a future with cleaner and safer space environments, protecting the integrity of our planet’s orbits.
As we bid farewell to ERS-2, we reflect on its immense contributions and the path it has paved for scientific advancements in Earth observation. The mission’s impact will continue to resonate across various fields of study, ultimately leading to a deeper understanding of our planet and the preservation of space for generations to come.
Watch the video below for an overview of ESA’s achievements in Earth observation and their commitment to a sustainable future:
[Embed YouTube video: https://www.youtube.com/embed/mHvRWdsKI0k?rel=0]
