The mysterious Sun: A source and a trap of exotica

Abstract

A few solar phenomena are given whose origin remains rather mysterious. The claimed observations of anomalous nuclear decays suggest new experiments, whose design should be observationally driven, i.e., going beyond conventional thinking. Also, the non-observation of delayed solar radioactivity after few large flares makes this issue more puzzling, while the solar flare trigger is considered anyhow as one of the biggest solar mysteries.