Space debris is a growing concern for satellite operations, and its impact on climate science is particularly alarming. The Aqua satellite, a key player in the Earth Observing System (EOS), has been dodging space junk for years, which has led to data corruption and fuel depletion. This issue is not isolated to Aqua; the entire EOS fleet has had to swerve to avoid debris, with some maneuvers potentially compromising climate data. The risk of collision is increasing, and the consequences are dire. Climate satellites like Aqua are at risk because they fly close to the planet to capture data, making them vulnerable to space junk in Low Earth Orbit (LEO). The situation is dire, with the number of debris pieces increasing by 180% since 2005. The majority of space debris is too small to track, and even a speck of paint can be catastrophic. Space junk is created through collisions and anti-satellite tests, and the risk of Kessler Syndrome, where satellite collisions cause a cascade of debris, is a real concern. The economic cost of space debris is significant, as satellites must use fuel to avoid collisions, which shortens their lifespan. The Aqua satellite, for instance, has lasted 18 years longer than planned due to careful fuel management, but it is now reaching the end of its life. After it's switched off, it will no longer have enough fuel to dodge space junk, increasing the risk of collision for U.S. government satellites. The insurance industry is struggling to keep up with the rising risk, and NGOs and government agencies are bearing the cost. MethaneSAT, a satellite designed to capture methane emissions, stopped transmitting data due to high solar activity, highlighting the vulnerability of these systems. The MODIS fire-tracking dataset will continue until Aqua and its partner satellite Terra are turned off, but NASA is facing budget cuts, and private firms are stepping in to fill the gap. The impact of space debris on climate science is profound, and the consequences of data loss are far-reaching. As space debris continues to increase, the need for better debris management and mitigation strategies becomes more urgent. The future of climate science depends on our ability to address this growing threat.
