Ok so, this is something that I've been researching for quite some time now and, no matter where on the internet I end up at, no matter how many sources I visit and read, this still doesn't make even a little bit of sense to me and it's actually driving me insane.
Light (or Photons I guess I should so but w/e, same diff) has the ability to move solid objects. It can do this in one of two different ways. The first way is by transferring momentum onto whatever it is that they run into, and the second way is by increasing the kinetic energy of the gas molecules around the object so much, that they move whatever's in front of them outwards.
The second method is the one that I'm very familiar with and understand well. The first method however, is the one that I still can't wrap my head around.
Like seriously, how does this even work anyway? Photons have no mass whatsoever and they don't interact with electrons or the electromagnetic force even a little bit. HOW are they capable of imparting momentum onto solid objects and causing them to move? Is there a transformation of electromagnetic energy to kinetic energy going on here? Do the Photons steal some mass from the Sun and impart it onto the Solar Sail? Is energy being converted into momentum (is that even possible?)? Seriously, what is actually going on here?