Is Einstein’s theory of gravity still relevant — we put it to its toughest test yet
Is Einstein’s theory of gravity still relevant — we put it to its toughest test yet We counted 20 billion ticks of an extreme galactic clock and this is what we found Pulsars: nature’s gravity labs In 2003, astronomers at CSIRO’s Parkes radio telescope, Murriyang, in New South Walesdiscovereda double pulsar system 2,400 light years away that offers a perfect opportunity to study general relativity under extreme conditions. To understand what makes this system so special, imagine a star 500,000 times as heavy as Earth, yet only 20 kilometers across....