[quote=@thewizardguy]
[@AtomicNut]
It's actually even more complicated than that.

Technically speaking light does have 'mass'. Sometimes. When it feels like it. Photons as a particle have mass, but photons as a wave don't. But even when they have mass they don't have electromagnetism due to a lack of electrons. They don't interact with other substances in the normal way. Instead light is absorbed and reflected by other molecules, depending on a bunch of factors.

In order to get light to act anything like a physical object you would need to somehow force them to continuously act as particles, and then force them into such close proximity that they would physically touch. This would create a material so astoundingly dense than an orb the size of a marble would have a mass of thousands of tons. Of course if you did somehow create and control this material it would be semi-invisible as it does not give off light, and also cause any 'normal' material it touched to disintegrate.

And the sheer energy contained in that many photons would be horrifying. I mean, you'd have to gather all the light that touched the Earth in order to get anything like that solid mass. And that's enough energy to blow cities off the map. You could cause entire buildings to just disintegrate.

And this is why physics and superpowers don't mix.
[/quote]

Photons DO NOT HAVE MASS. They have momentum.