Half a croissant, on a plate, with a sign in front of it saying '50c'
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science: spacecraft: propulsion: light
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Ideas in bold have been created this week.
 (+3, -7)  Moon mirrors. Solar sails powered by bright stars 
   row up a tangle 
 (+1, -2)  Solar Fiber Laser 
 (+1)  Solar Spacecraft Propulsion 
   Solar Thermal Photon Drive 
 (+6)  Solar Windmill Launcher 

 

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