Your latest paper focuses on fleets of small solar sails. What advantages do solar sails have over other types of spacecraft? Alexander: Solar sails use a non-consumable propulsion force. They are ...

The Japan Aerospace Exploration Agency (JAXA) took images of the deployed solar sail of the Small Solar Power Sail Demonstrator "IKAROS" by the second separation camera*1 on June 19, 2010 (Japan ...

The Japan Aerospace Exploration Agency (JAXA) successfully took images of the whole solar sail of the Small Solar Power Sail Demonstrator "IKAROS" after its deployment of a separation camera* on June ...