Recent content by tathagata

thank you for your reply..:smile: considering your view.. i came up with this.. The density of the solar wind is 10 protons/cc on average, and the average solar wind speed is 425 km/s. The mass of the Earth is 5.98 x 1024*kg, and its radius is 6.37 x 106*meters. So, the cross-section of the...

hi friends, i came across this piece of news... "Until 2010, no solar sails had been successfully used in space as primary propulsion systems. On 21 May 2010, the Japan Aerospace Exploration Agency (JAXA) launched the “IKAROS” (Interplanetary Kite-craft Accelerated by Radiation Of the Sun)...