It’s only been a couple of weeks since the world cheered for the LIGO collaboration that made the first direct detection of gravitational waves from a binary black hole merger. Now, another group hunting for these spacetime ripples say they could detect very low-frequency gravitational waves using existing radio…
Here's a space-age idea if you've ever heard one: NASA is building a galactic GPS system that will provide astronauts a better, more accurate map through our solar system. This is obviously an ambitious undertaking, one that will take generations, not years, to complete.
While your computer is running idle, it could be finding new pulsars and black holes in deep space—just like the computers of three volunteers running a program called Einstein@Home.
OK, mind blowing: A scientist at the Observatoire de Paris basically invented GPS for interstellar travelers: Simply tune in the radio signals from four pulsars, crunch some numbers having to do with relativity (natch) and read your position within the galaxy—to within a meter.