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POINT NEMO AND UNCONTROLLED SPACE JUNK On March 8, 2024 a specifically discarded equipment pallet from the International Space Station (ISS), re-entered Earth's atmosphere and impacted over the Pacific Ocean. This pallet, jettisoned in 2021, was part of a mission to replace old nickel-hydrogen batteries on the ISS with new lithium-ion ones. Despite the uncontrolled nature of its re-entry, the location over the Pacific Ocean was not unexpected, as controlled re-entries often target this area, particularly a region known as the spacecraft cemetery or Point Nemo, due to its remoteness from land. The increasing amount of space junk poses a risk of collision and further debris generation, a scenario known as the Kessler syndrome - a cascading effect of collisions between satellites and space debris in Earth's low Earth orbit (LEO). As more objects populate LEO, the odds of collisions increases, creating more debris and a self-perpetuating chain reaction. Efforts to manage space debris face challenges, including the lack of a centralized authority for clean-up and the technical difficulties of removing debris from orbit. The European Space Agency (ESA) closely monitored the re-entry of this pallet, estimating its re-entry window and acknowledging the low risk it posed to human safety due to the vast majority of Earth's surface being uninhabited or covered by water. The ESA and other space agencies regularly track such re-entries, which occur about once a week for large objects, to assess and mitigate potential risks. This incident underscores the broader issue of space debris management and the need for international cooperation and innovation in debris monitoring, mitigation, and removal strategies to ensure the long-term sustainability of space activities. Forewarned is forearmed. ...by Professor Dewey YEE, Space Commerce The Hong Kong Polytechnic University Source: https://lnkd.in/g_msq-gw #spaceindustry #spacedebris #leo #esa #spacesustainability

POINT NEMO AND UNCONTROLLED SPACE JUNK

POINT NEMO AND UNCONTROLLED SPACE JUNK

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