03/12/2024

"Satellite ERS-2 Returns Uncontrolled to Earth Over North Pacific: Re-Entry Explained"

A satellite named ERS-2 made an uncontrolled return to Earth over the north Pacific Ocean between Alaska and Hawaii on Tuesday evening, re-entering the atmosphere at 5:17 p.m. UTC. The satellite, with a weight similar to that of an adult male rhinoceros, had a "natural" return due to its depleted batteries, switched-off communication antenna and electronics, and lack of active ground control during its descent. Launched in 1995, ERS-2 was an Earth observation spacecraft utilized for collecting data on land surfaces, oceans, polar caps, and monitoring natural disasters like flooding and earthquakes. Its mission concluded in 2011, after which the deorbiting process began to prevent collisions and reduce space debris creation. The European Space Agency took measures to minimize the risk of space debris and potential explosions by depleting the satellite's fuel in 2011, which ultimately led to its re-entry. Fortunately, most of the satellite burned up upon re-entry, and no toxic or radioactive substances were present in the resulting fragments. The annual risk of a person being injured by space debris is incredibly low, at less than 1 in 100 billion. The controlled deorbiting process aimed to mitigate risks associated with defunct satellites like ERS-2 and contribute to sustainable space practices. In other space news, three NASA astronauts and one Russian cosmonaut flew to the Kennedy Space Center to prepare for their mission aboard a SpaceX Falcon 9 rocket to the International Space Station. The Crew 8 members, led by Commander Matthew Dominick, are set for a six-month tour aboard the ISS. The crew will undergo a dress rehearsal countdown before the planned launch from historic pad 39A at 12:04 a.m. Friday. SpaceX achieved another milestone with the successful docking of a Crew Dragon spacecraft at the International Space Station early Tuesday morning. The Crew 8 members, including three NASA astronauts and a Russian cosmonaut, will replace the previous Crew 7 members and stay for a six-month tour of duty before undocking on March 11. Furthermore, Japan's H3 rocket reached orbit in a key second test, releasing two small observation satellites. The successful launch marked a significant advancement for Japan's space program, following previous achievements such as a precise moon landing by an unmanned spacecraft. Developed as a successor to the H-2A rocket, the H3 rocket aims to secure independent access to space and meet the growing demand for satellite launches worldwide. SpaceX also successfully launched its 16th Falcon 9 rocket of the year, carrying the Indonesian communications satellite Merah Putih 2 into orbit. The mission marked the 301st launch of the Falcon 9 rocket since its debut in 2010, underlining SpaceX's continued commitment to space exploration and satellite deployment. With these developments in the space industry, advancements in space exploration and technology continue to unfold, showcasing the collaborative efforts of international space agencies and private companies in furthering our understanding of the cosmos and fostering sustainable practices in space.