Recent content by abuguchie

As well as this one: http://www.nasa.gov/mission_pages/kepler/news/kepler_data_release.html

http://kepler.nasa.gov/news/mmu/index.cfm?FuseAction=ShowNews&NewsID=109 Here is the official site about the Kepler findings.

I always thought that when photons gained enough energy, they would spontaneously decay into a particle and an antiparticle, and this is where the matter came from. However, I am not sure, I am quite inexperienced so correct me if I'm wrong...

Could there be an antimatter universe parallel to ours? If so what would the "boundary" between the two be like?

What would the universe be like in contrast to what it is now if it were made out of antimatter? Or would it be exactly the same? Thanks.

Would it have the same effect as simply taking the gravity away?

I've seen several posts on antigravity and theories on whether it can or cannot be a repulsive force as well as an attractive one. My question is, what would happen if all gravity in the Universe was somehow made repulsive?how would that affect spacetime? Would everything remain exactly the same?