Shortly after its birth, our Sun was probably a very turbulent, hyperactive star. This is indicated by geoscientific analyses of rock inclusions from a meteorite originating in our early Solar System. In those inclusions, researchers from Heidelberg University detected decay products of a very short-lived radioactive isotope that can only have been generated by an intense burst of radiation from the nascent young Sun. The scientists consider this strong proof of an intermittently highly active primeval Sun.
The Sun, along with our Earth and the other planets, originated 4.6 billion years ago from a cloud of cosmic gas and dust. ...
