Of course there are planet's like earth, everything in life is duplicate and/or is based off of something. Take the wheel for example, The earliest well-dated depiction of a wheeled vehicle (here a wagon—four wheels, two axles), is on the Bronocice pot, a ca. 3500–3350 BCE clay pot excavated in a Funnelbeaker culture settlement in southern Poland. And years later the wheel was modified in the 1870's and it is still being modified as we speak. So the whole point of this is, the wheel was based off of of a wheel it can only be modified nothing more can be done to it. So if the're planet's they must be based off of something maybe like earth, so yes the're are planet's like earth.
Well to us space will be eternity, because we can never rich the end. About space being there or just appearing to me is not true. have you ever heard about the big bang well I believe in the big bang but my version of it. "God made it all happen" cause if nothing was there then there's no reason, So in that case "reason" does not exist in that point, nor does time. And the're other species like us, we just don't know about them and some we do know about the government keep's it a secret. Because if you knew there were aliens coming to earth wouldn't you say the world was ending or something similar?