Originally Posted by who

Honestly, how can they measure any cosmic events at all using 'earth years' ? It's all relative and .. irrelevant. I mean, you'd have to be positioned on Earth itself to be able to observe and measure events using Earth time. If you're not located on Earth, an 'Earth year' is not a real measurement. So, before earth existed, measuring events in Earth years is ... well... to me anyway, it sounds absurd.