NASA is racing to save an aging telescope from falling back to Earth with a daring rescue mission.

WASHINGTON - NASA is planning a daring mission to stave off the death of one of its space telescopes that is in danger of falling back to Earth. The Swift Observatory has been observing the cosmos for more than two decades while orbiting around Earth. But in recent years, NASA has noticed that the critical satellite has begun unexpectedly getting lower and lower – putting it in danger of burning up in Earth's atmosphere. Now, the U.S. space agency is preparing to mount a rescue mission later in June – the likes of which has never before been attempted. What's more, the plan to save Swift from a fiery demise has been in the works for less than a year. If all goes to plan, a commercial spacecraft would launch on a commercial rocket on a trajectory to intercept NASA's telescope and reverse its decaying orbit by boosting it to a higher altitude, extending the mission’s life. A successful mission would mark the first time that a commercial robotic spacecraft captured a government satellite that – unlike other spacecraft…