-- A collaboration of physicists from Max Planck Institute of Quantum Optics, LMU, Harvard and Caltech detect Higgs-type excitations in a low-dimensional system of ultracold atoms at the transition between different ...
This Mathematical Model Shows You Exactly Where to Park Your Starship. You may have heard of Lagrangian points — they are five gravitationally stable locations around our planet, created by the forces exerted by the Earth and Moon on each other. They're a perfect place to put a satellite (and indeed we have). In this incredible model, you can see exactly where they are, and why.
Space-time describes space existing in 3 dimensions & time as the 4th dimension, forming a continuum. Flat space-time & negative space-time describe the Universe as non-compact, extending infinitely in any direction. Negatively curved space-time describes a Universe filled with negative vacuum energy (holography). A new mathematical model links flat space-time & negatively curved space-time, with the latter in a negative number of dimensions, beyond our realm of physical perception. #physics
Einstein's Theory of Relativity Victorious Once Again
In a match-up between quantum theory and the general theory of relativity, Einsteins theory has once again come out victorious: this time in an orbiting pair of ultra-dense stars. "Our radio observations were so precise that we have already been able to measure a change in the orbital period of 8 millionths of a second per year — exactly what Einstein's theory predicts."