"GEMINI-2 REENTRY-This photograph is an enlargement of a frame from a 16 motion plature ausora swhich was mounted within the GT-2 spaoscraft to take film through the hatch dndow. The spacecraft at this point is in the reantry phase of its return through the earth's atmosphere.
Peak hosting exists on the spacecraft heat shield. The white glow is produced by ionised gases. The groanish tinge to the white glow is probably the contribution of the ablative products (of the heat shield) as they are known to have strong spectral lines in the green region. The bright streaks are probably hot fragments from the dre and tubing fairings located near the heat shield. The altitude is 173,000 feet. The Mach number is 19.0. The inertial velocity is 22,150 feet per second"
Real time video of the re-entry: link
NASA ID: S65-13165, S65-13167