Spacetime: A Smoother Brew Than We Knew
Spacetime may be less like beer and more like sipping whiskey. Or so an intergalactic photo finish may suggest. Physicist Robert Nemiroff reached this heady conclusion after studying the tracings of three photons of differing wavelengths that were recorded by NASA’s Fermi Gamma-ray Space Telescope in May 2009. The photons originated about 7 billion light years away from Earth in one of three pulses from a gamma-ray burst. They arrived at the orbiting telescope just one millisecond apart, in a virtual tie.
“Gamma-ray bursts can tell us some very interesting things about the universe,” Nemiroff said. In this case, those three photons recorded by the Fermi telescope suggest that spacetime may not be not as bubbly as some scientists think.