Hi there. You posted:

The part i still don't get is the early "life" of this planet. Scientists
believe that before it came to be in the position it is today, before
it entered M4, its sun was a "Sunlike star." Now, our star is a
3rd generation star, correct?

A first or second (more likely) generation star would be considered
"sunlike" if it had a similar mass and surface temperature. Clear skies
to you.
--
David W. Knisely
Prairie Astronomy Club: http://www.prairieastronomyclub.org
Hyde Memorial Observatory: http://www.hydeobservatory.info/

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