# Momentum of photons

We know that photons (light) are massless but they have momentum. Now suppose I am in the space far away from planets/stars that there is no external force exerts on me, if:

1- I turn on a flashlight (torch), would I be pushed in the opposite direction which the flashlight is facing (Newton's third law)?

2- If a star is shedding light on me (its photons hit my body), would I start moving due the impact of the photos?

• – mmesser314 Aug 12 at 13:12
• I've removed a number of comments that were attempting to answer the question and/or responses to them. Please keep in mind that comments should be used for suggesting improvements and requesting clarification on the question, not for answering. – David Z Aug 13 at 0:10

• Note that it takes a lot of energy. For light, $E=pc$, so (for example) to give 1 kg an impulse of 1 m/s takes almost 300 megajoules. – PM 2Ring Aug 12 at 11:51