There are multitude of problems in understanding of physics even at today’s level. This actually is fine as it leads to be adventurous in proposing new theories and plan new experiments. This forum may add issues from time-to-time. However, we wish to write something about the following ones:

#01: There are fundamental forces in nature binding universe, namely Electromagnetic, gravitation, strong interactions within the particles, weak forces of nature like radioactive decay. Are there more?

#02: Are there dark energy and dark matter in universe in reality? Are we anywhere near to observe them ?

#03: Is there any unified theory possible to explain out everything in universe?