The Nature Podcast brings you the best stories from the world of science each week. We cover everything from astronomy to zoology, highlighting the most exciting research from each issue of the Nature journal. We meet the scientists behind the results and provide in-depth analysis from Nature's journalists and editors. Hosted on Acast. See acast.com/privacy for more information.
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How galaxies could exist without dark matter
00:47 The mystery of the missing dark matter Dark matter makes up most of the matter in the Universe, and is thought to be needed for galaxies to form. But four years ago, astronomers made a perplexing, and controversial discovery: two galaxies seemingly devoid of dark matter. This week the team suggests that a cosmic collision may explain how these, and a string of other dark-matter-free galaxies, could have formed. Research article: van Dokkum et al. News and Views: Giant collision created galaxies devoid of dark matter How fossil fuel burning has caused levels of helium to rise, and a high-efficiency, hybrid solar-energy system. Research Highlight: Helium levels in the atmosphere are ballooning Research Highlight: Flower power: ‘Sunflower’ system churns out useful energy We hear the stories of scientists whose lives have been affected by Russia’s invasion of Ukraine, including researchers who have become refugees, soldiers and activists in the face of a horrifying conflict. Nature Feature: How three Ukrainian scientists are surviving Russia’s brutal war
08:39 Research Highlights
10:49 Researchers experiences of the war in Ukraine
20:46 Imaging the black hole at the centre of the Milky Way
Last week, a team of researchers released an image of Sagittarius A*, the supermassive blackhole at the centre of our galaxy. We hear how they took the image and what it is revealing about these enormous objects.
Nature News: Black hole at the centre of our Galaxy imaged for the first time
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