How do we measure the vast distances of the Universe?

quad , as we all know , is boastful . In fact , it ’s more than with child ; it’svastly , hugely , mind - bogglingly big .

But how swelled is that , exactly , and how do we go about assigning actual , quantifiable distance between planets , nebulae , and other cosmic entity ? In this beautifully liven telecasting , produced by the Royal Observatory Greenwich , astrophysicist Olivia Johnson explain how scientists use something calledparallaxto gauge the length between the landmarks of our universe .

The moving-picture show comes via “ Measuring the Universe : from the transportation of Venus to the edge of the cosmos , ” a free exhibition presently being held at the Observatory . It ’s scheduled to run all the way through September 2nd , so be trusted to correspond it out if you see yourself in jolly erstwhile England .