NASA described the Kentucky Reentry Probe Experiment’s third mission in an October 9 report. Twelve small capsules carried inside the Cygnus cargo spacecraft are designed to examine thermal protection materials as the vehicle returns through Earth’s atmosphere.

The probes use sensors and satellite communications to measure conditions and transmit information during reentry. Designs include established protective materials and experimental approaches, including a 3D-printed heat shield and flexible coverings.

The project involves the University of Kentucky, NASA centers and other partners. It uses a cargo spacecraft’s planned disposal journey as an opportunity to collect flight data rather than requiring a dedicated large test vehicle.

The work remains an experiment. Measurements can help evaluate material behavior and computer models, but the announcement does not certify a new heat shield for crewed missions. Analysis of the returned data is a separate step from sending the probes into flight.