Even the biggest scientists of all time had no idea from where did these effects come... One hypothesis is that of Higgs mechanism and I don't get convinced by this hypothesis.But another hypothesis came for me... Can't mass be the 'container' of energy? As every object gets its own energy, whatever means it may be, every container has a limit. So, when approaching speeds of light, the mass increases. That means, the container can't hold any more. Is there any problem with this? help me!