The SSETI Express satellite will test and characterise a propulsion system, return images of the Earth and serve as a transponder for amateur radio users.
Like a Russian doll, SSETI Express will carry inside it three smaller 'cubesats' – 10-centimetre cube technology testers built respectively by universities in Germany, Japan and Norway – for deployment when in orbit. The main SSETI Express satellite itself will test and characterise a propulsion system, return images of the Earth and serve as a transponder for amateur radio users.
Solar panels of the gallium-arsenide type that will power SMART-1 enabled the Dutch-built solar-powered car 'Nuna' to win the World Solar Challenge race across Australia in 2001