I'm in mourning. Apparently it's been proven once and for all that time travel isn't possible. A team of researchers from the Hong Kong University of Science and Technology claims to have measured the speed of a single photon (the smallest unit of light) and found that it can't travel faster than constant c (which represents the speed of light in a vacuum). This confirms Einstein's views that "nothing can travel faster than light" and therefore, "an effect cannot occur before its cause."
I guess I can still hope for the discovery of wormholes that might allow me to travel quickly to far parts of the universe. But that just isn't the same.L