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okay, my 30 mW green laser has finally arrived! (after two long months of shipping T_T) Okay, so I have 2 questions right now. 1) if i'm using this for outdoor night star pointing/beam viewing, will i need goggles? I hope not, because i've heard you can't see the beam if you have goggles on...

I just bought this and was wondering how dangerous is this, because i have a little brother, and he's....lets say curious at times, and I don't want him to be playing around with something dangerous. Also, If i'm just using this to play around and point at things, will i need goggles? Thanks...