Hello everybody! I was wondering these days while resting on a bed , thinking about my sister and her 3 year old girl, my parents wich are getting old now beeing 63 and 61(dad and mom),thinking about my childhood from the 1990's wich has passed SO FAST(or is it just me?!), thinking about the moment I started to write this post , the moment I AM typing this post and the moment that I WILL type some more words here on this forum! What do you SMART physics guys and girls think about time? What really is it?! Because I feel sorry for "contemplating" at how my life goes by and I can't do a thing to "freeze it" at least for a moment or more(years if possible)... I feel "sorry" because all the good moments pass away, all my relatives get old and eventually die,all the happines goes away , beeing replaced by sadness and many thoughts of "WHY"?! I suppose this notion of "time" , has A LOT to do with physics because it doesn't really looks like chemistry, mathematics or biology... So, I hope this question hasn't been asked so far or at least "lately" and someone here could offer a reasonable answer to my "dilema"/question... Thank you all in advance!