Because much of the data was transmitted during the mission, there was still large return on the mission objectives even though it was lost on re-entry. NASA estimated that 30% of the total science data was saved and collected through telemetry back to ground stations. Around 5-10% more data was saved and collected through recovering samples and hard drives intact on the ground after the Space Shuttle "Columbia" disaster, increasing the total data of saved experiments despite the disaster from 30% to 35-40%.