On Earth, robots conduct rescue missions quite frequently. They search for survivors in collapsed buildings, bring supplies to remote locations, and provide information on the conditions during disasters.
Now for the first time, a robotic spacecraft is being readied to rescue a NASA satellite.
NASA’s Neil Gehrels Swift Observatory is a gamma ray telescope that was built to detect gamma ray bursts from galactic objects. It was originally placed in an orbit 600 kilometers above Earth’s surface. Recently the Sun’s increased activity has heated up the upper atmosphere, causing it to expand, which in turn causes satellites to lose altitude more quickly. Right now, Swift has an altitude of only 395 km, and without assistance would almost certainly reenter by the end of this year.
Recognizing this, NASA’s Science Mission Directorate awarded a $30 million contract to Katalyst Space Technologies to attempt a world-first rescue mission. Katalyst’s rescue vehicle, known as LINK, is being equipped with three robotic arms which will allow it to dock with Swift. Then LINK will use its own propulsion system to raise Swift’s orbit back to 600 km altitude. You can read more about the mission at https://www.katalystspace.com/post/nasa-telescope-is-about-to-fall-out-of-the-sky
The challenge is huge. The contract award was made in September 2025, and the mission must launch by June 2026 in order to have maximum chance of success. All the design work, assembly, testing, and preparations for launch must occur in that very compressed 10-month period.
This mission represents another “first” for space robotics. To my knowledge, it is the first time that a robotic servicing vehicle has been funded by a customer for a unique, one-off mission. This signals that the field has grown from concepts and demonstration missions to being an important part of space operations and capabilities.
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