Rocket Fuel Contamination of Stardust Samples?

Stardust’s Data May Be Contaminated, Report Says, Popular Mechanics

“When the mission finally returned to Earth last year, the samples revealed the presence of osbornite, which indicates that the big beginning was hotter and more violent than scientists had previously imagined. But a new report insists there may be another reason for the presence of the mineral in Stardust’s samples: Contamination by rocket fuel, which contains Titanium Nitride – osbornite’s chemical compound.”