Past Future

I was hearing about this Time travel a lot now-a-days. Not that it was ever spoken before, but it is the topic of the month among my friends. So, thus this blog is all about it.

I was wondering, if someone in future invents a time machine and bring that time machine to yesterday then there will be a change happening in yesterday that we will come to know today. So history becomes news! For that matter past becomes future. If this continues then our perception of viewing past, present, future will change. We no longer have just past, present and future. We may need to have past, present, future, pastfuture and presentfuture. So children may need to study history and news-history!

I was wondering if at all there can be pastpresent, futurepast and futurepresent? I couldn't think of a scenario that could give raise to these through time travel. So, what kind of travel do we need to have pastpresent, futurepast and futurepresent?!

I stumbled across somewhere (I don't remember the reference) that if a star is say 1 million light years away from earth. If we look at the star that means we are actually witnessing something happening 1 million years from now. Does that sound like futurepresent?

If we are 1 million light years from that star, then we are witnessing something that happened in the star 1 million light years before. Does this sound like pastpresent?

I still couldn't find anything about futurepast. Any help?