The cosmonauts were unable to collect a material exposure experiment from the station exterior due to a stuck hinge that prevented it from folding closed, NASA officials said.

MSN: Spacewalker tosses out real-life 'Spaceball' - Technology & science - Space - Space.com | NBC News

The material was used in a nuclear power experiment at Dounreay later abandoned following the discovery of oil and gas in the North Sea.

BBC: ?30m to take Dounreay material by rail to Cumbria

The beta launch this week is aimed at getting developers to offer suggestions about what type of material with which they would like to experiment.

BBC: NEWS | Technology | Developers to play with BBC wares