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SIMPLIFIER: ADDRESSING THE CRITICAL ISSUE OF SPACE JUNK



  May 23, 2024

SIMPLIFIER: ADDRESSING THE CRITICAL ISSUE OF SPACE JUNK



1. What is space junk and why is it concerning?

Space junk refers to defunct man-made objects in space, such as old satellites, spent rocket stages, and fragments from disintegration, all orbiting Earth. These objects, some as large as 10 centimeters across, orbit at speeds of about 10 kilometers per second, posing serious risks to active satellites, spacecraft, and even safety on Earth due to potential re-entry impacts.

2. How extensive is the space junk problem?

Currently, over 25,000 pieces of space debris larger than 10 centimeters, totaling around 9,000 metric tons, are tracked by the U.S. Air Force. The number of satellites has also surged to nearly 10,000, significantly increasing the potential for collisions and further debris generation.

3. What are the potential consequences of space debris collisions?

Collisions in space can create additional debris, potentially doubling the existing amount instantaneously. Each collision spreads countless smaller, yet still hazardous, fragments across various orbits. This escalating debris scenario poses a potential trillion-dollar threat to global space infrastructure annually by the next century.

4. What measures are being discussed to mitigate space debris?

There is a strong call from scientific communities and international bodies for an international treaty that sets clear limits on debris creation, outlines specific responsibilities for space-faring entities, and establishes penalties for those whose activities generate debris. This treaty would aim to manage and reduce the presence of debris in Earth’s orbit.

5. How are current space missions affecting the debris situation?

The rapid increase in satellite launches, notably the thousands of satellites from private companies like SpaceX, has contributed heavily to the density of objects in orbit. These activities increase the likelihood of collisions and debris generation, necessitating stringent management and mitigation strategies.

6. What is the role of global cooperation in solving this issue?

Effective management of space debris requires international cooperation and compliance with global guidelines and treaties. As space becomes increasingly commercialized and crowded, establishing and enforcing global rules is essential to prevent the orbit around Earth from becoming overly hazardous.

This Simplifier emphasizes the urgency of establishing international regulations and collaborative efforts to manage and reduce space debris effectively, ensuring the safety and sustainability of space activities for future generations.



SRIRAM’s



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