Icy Moons and Ice Cubes

Published: July 25, 2018, noon

July's astronomy update from Chris North and Edward Gomez. It was announced this month that Jupiter has got even more moons than previously thought, with its total haul now coming in at 79! We discuss why the new moons are odd. The Very Large Telescope in Chile also made a new discovery \u2013 a very young planet forming in the dusty disk of material around its star. And back here on Earth, the MeerKAT radio telescope has been inaugurated in South Africa, producing a new image of the centre of our galaxy and making important progress towards the eventual goal Square Kilometre Array, which will be spread across Southern Africa and Australia..\n\nBut there was a more unusual announcement this month from the IceCube neutrino observatory, which is sensitive to ghostly subatomic particles called neutrinos. At the end of last year, the team worked with \u201ctraditional\u201d astronomers, i.e. those looking at light of various wavelengths, to identify a neutrino that originated from a blazar \u2013 material surrounding a supermassive black hole in the centre of a galaxy. Since this takes us in to the realm of particle physics, I spoke to Dr Ben Still, honorary researcher at Queen Mary University London and author of \u201cParticle Physics Brick by Brick\u201c, in order to find out more about neutrinos, how we detect them, and what we can learn from them.\n\nAn extended edition of an original\xa0broadcast on 25th July 2018 as part of Pythagoras' Trousers on Radio Cardiff.