How do solar sails work?

Given that photons are massless, how do solar sails get pushed along by light? We explore the reasoning in this Question of the Week! Plus, we ask why wet dogs always seem to...
22 August 2011
Presented by Diana O'Carroll

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Given that photons are massless, how do solar sails get pushed along by light? We explore the reasoning in this Question of the Week! Plus, we ask why wet dogs always seem to smell so appalling.

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