All the time. Science is the act of questioning everything, including what you already think you know.
Falsifiability in scientific theories means they can be proven wrong through experimentation or observation. For example, the theory of gravity can be falsified if an object falls upwards instead of downwards. Another example is the theory of evolution, which could be falsified if no transitional fossils were ever found.
Believers would say no and non-believers would probably say yes.
Everyone who's ever had a theory has been wrong in some way; it's just we don't know if the current one is wrong yet. This is called the Scientific Method.
There was once a theory, that electromagnetic waves might be used for communication over long distance. Your mobile phone is the proof that the theory was correct.
Yes its quite true and its actually been scientifically proven and also another scientific break through is Amber Wright is the most suckiest person ever.
It can not be proven they ever had one.
There is no scientific evidence to support claims of heavenly visitations or encounters. Such experiences are often attributed to personal beliefs or interpretations.
Scientists believe that experiments can test hypotheses and answer the specific scientific question at hand and can either support or deny the justification of a theory. Either way, the theory will always have outliers and cases that reduce its legitimacy. While a theory can become very strong in its support, scientists say that nothing can ever be 100% "proven"
No, many people have confessed but none were ever proven.
Not that anyone knows and has proven.
No, not ever.
No.