Commercial robot launched to save aging telescope

Link, a three-armed spacecraft, lifted off in July to boost the orbit of Nasa's Neil Gehrels Swift Observatory, which has studied cosmic events for 22 years. The mission aimed to extend Swift's life before it decayed back to Earth.

Link got close but couldn't complete the capture

The spacecraft approached within 7 to 9 miles of Swift and photographed its condition, but in-flight problems with motion control and communications prevented it from capturing and boosting the telescope as planned.

Electronics failures crippled the rescue spacecraft

Two of Link's three reaction wheels failed after launch, causing the spacecraft to enter a deep spin. Though control was restored, insufficient fuel remained to attempt the rescue.

Link returns after 85 days in orbit

The spacecraft re-entered Earth's atmosphere on Friday after nearly three months in space. Katalyst Space Technologies, the Arizona company behind the mission, had won a $30 million Nasa contract in September 2024.

Swift will follow Link back to Earth

Without the altitude boost, the Neil Gehrels Swift Observatory is expected to re-enter Earth's atmosphere in November. The telescope's lifespan was ironically shortened by the intense solar flares it was designed to observe.

Nasa calls it a worthwhile high-risk attempt

Nasa officials said the mission advanced spacecraft servicing capabilities and tested new ways to operate satellites in low Earth orbit, even though it failed to save Swift. The agency praised the team's speed in assembling the rescue plan in just 22 months.

“Nasa should be willing to move quickly and take smart risks when the potential return is worth it.”