http://www.space.com/19202-einstein-space-time-smooth.html So scientists studied photons from a gamma ray burst that arrived around the same time. If spacetime was foamy, as many scientists believed, the idea is they should have gotten knocked around on the way, yet they arrived very close to the same time. If this holds up, it could have some pretty big implications. It could mean particles don't pop in and out of existence as was thought. A lot of phenomena that have been observed were chalked up to 'foaminess', like the Casmir effect. It is a lot to base off a few photons though, and we saw what happened last time when they announced particles had exceeded the speed of light... Thoughts?