Nope. Blu-Rays aren't DVDs at all. They look similar and they're the same size, but the data is formatted differently, because they hold much more information than a DVD. The only thing that can play a Blu-Ray is a Blu-Ray player (and the good news is that Blu-Ray players can also play DVDs - and audio CDs too).
No u can't,but if u have a ps3,u can play ur blue ray dvd if u don't want to give money out for a blue ray player.did it for some time.and the nice thing about the ps3 is,when we go on holiday,we take it with and can watch dvd,cause it also play normal dvds