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Description: The collision of two neutron stars flung out an extraordinary fireball of material and energy that is allowing a Princeton-led team of astrophysicists to calculate the Hubble constant, the speed of the universe’s expansion. They used a super-high-resolution radio ‘movie’ (left) that they compared to a computer model (right). To generate their ‘movie,’ the science team combined data from enough radio telescopes spread over a large enough region to generate an image with such high resolu
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