Apple has been somewhat successful with its download to own (DTO) service through iTunes however, not nearly as successful as their rental (VOD).

FORBES: UltraViolet: Boom Or Bust For Studios And Consumers?

The DTO consumer value proposition with iTunes is the best available option currently available allowing consumers to download a movie to their PC or Apple devices.

FORBES: UltraViolet: Boom Or Bust For Studios And Consumers?

What is more, most of the 13 tonnes is made up by the propellants unsymmetrical dimethylhydrazine (UDMH) and dinitrogen tetroxide (DTO), both of which are toxic.

BBC: Stricken Mars probe stays silent

The propellants, unsymmetrical dimethylhydrazine (UDMH) and dinitrogen tetroxide (DTO), are highly toxic but they will almost certainly be consumed in the fireball that engulfs Phobos-Grunt when it makes its death dive to Earth.

BBC: Video tracks stricken Mars probe