Can loved ones visit us from heaven, and if so, how can we know when they are trying to communicate with us"?

There is no scientific evidence to prove that loved ones can visit us from heaven or communicate with us after death. Belief in such occurrences is often based on personal faith or spiritual beliefs. Some people may feel a connection or receive signs they interpret as communication from a deceased loved one, but these experiences are subjective and not universally accepted as proof of contact from beyond.