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Just ten years ago , NASA researchers Thomas Sterling and Don Becker connected 16 machines to create a cluster they called Beowulf . In 1993 , NASA astronauts installed a special instrument inside the Hubble that has tiny mirrors that correct the distorted light from the primary mirror . The team has embarked on a campaign to reconstruct what Culbert calls " an extinct agricultural system , " to pull back the jungle 's thick green curtain with machetes , pack mules , state-of-the-art satellite imaging , and information gleaned from ceramics , soil cores , NASA computers , and local farming techniques . In a show of confidence , NASA managers recently approved $ 2.8 million for an additional six-month extension for the mission . As the agreement is implemented , NASA researchers and their FEMA colleagues will use a variety of public and private satellites and aircraft-mounted Earth-observing instruments .