Is energy always conserved?

This is why I love physics.It the beauty of nature and asking plenty of question regarding why, and this is only the beginning of physics new particles being discovered,things being approve or being propose that is breaking the laws of physics that we know It also help us construct new technologies and also responsible for everything tech related that we have and the beauty of math is right in the face of all of it.Physics the study of matter and energy and how they work and why they behave the way they do is just amazing and I would probably do anything to enter this field to be honest nothing else matter than this that how I feel sometime, I just love physics. +Physics Girl