Rescue satellite gets close to NASA's doomed telescope, even if it can't save it
- Katalyst Space Technologies' Link spacecraft approached within 15 kilometers of NASA's Swift Observatory on Tuesday and captured photos, two weeks after the rescue mission was officially abandoned in August.
- Link experienced an uncontrollable spin shortly after launch in July; flight controllers stabilized it but consumed critical fuel in the process, leaving insufficient propellant to boost Swift to a higher orbit.
- NASA paid Katalyst Space $30 million for the rescue attempt, which was assembled in just nine months with engineers using available parts rather than preferred components due to time constraints.
- Swift Observatory, launched in 2004, has dropped to an orbit of 208 miles altitude and has limited time remaining before atmospheric reentry, with intense solar storms accelerating its descent.
- NASA Administrator Jared Isaacman stated the mission represents the type of experimental salvage operations NASA should pursue, noting the Roman Space Telescope was designed for refueling due to lessons learned from such efforts.
Katalyst Space Technologies' Link robotic spacecraft achieved a close approach to NASA's Swift Observatory on Tuesday, maneuvering within 15 kilometers and collecting sensor data on the aging telescope. Although the rescue mission was formally abandoned in August, the company continued the operation to gather experience for future satellite-servicing missions.
The mission encountered significant challenges when Link entered an uncontrollable spin shortly after its July launch. Flight controllers successfully stabilized the spacecraft but expended substantial fuel reserves in the process. The remaining propellant proved insufficient to execute the primary objective of boosting Swift into a higher, more stable orbit that would extend its operational lifespan. Katalyst CEO Ghonhee Lee attributed the spacecraft's difficulties to the accelerated nine-month development timeline, during which engineers were forced to use readily available components rather than optimal parts.
Swift Observatory, which launched in 2004, continues its descent toward Earth. As of Friday, its orbital altitude had dropped to 208 miles, less than half its original height. Intense solar activity in recent years has significantly accelerated the telescope's orbital decay. While Link likely lacks sufficient fuel for another close approach, it can continue operating its three robotic arms and transmitting valuable data before burning up in the atmosphere within weeks. NASA Administrator Jared Isaacman characterized the mission as an important experimental effort, noting that such salvage operations make economic sense when replacement costs exceed repair expenses.
救援卫星接近NASA失效望远镜，但无法拯救它
卡塔利斯特太空公司的Link机器人航天器周二接近NASA的斯威夫特天文台，在15公里范围内机动并收集了这台老化望远镜的传感器数据。尽管救援任务在8月被正式放弃，但该公司继续进行该操作以积累未来卫星维修任务的经验。
该任务在Link于7月发射后不久陷入失控旋转时遭遇重大挑战。飞行控制人员成功稳定了航天器，但在此过程中消耗了大量燃料储备。剩余推进剂不足以执行主要目标，即将斯威夫特推升至更高、更稳定的轨道以延长其运行寿命。卡塔利斯特首席执行官李根熙将航天器的困难归因于加速的九个月开发时间表，在此期间工程师被迫使用现成的部件而非最优部件。
2004年发射的斯威夫特天文台继续下降。截至周五，其轨道高度已降至208英里，不到原始高度的一半。近年来强烈的太阳活动显著加速了望远镜的轨道衰减。虽然Link可能缺乏足够的燃料进行另一次接近，但它可以继续操作其三条机器臂并在数周内烧毁前传输宝贵数据。NASA局长贾里德·艾萨克曼将该任务描述为重要的实验性努力，指出当替换成本超过维修费用时，此类救援操作在经济上是合理的。