Spacetime With Stuart Gary

S27E140: Sagittarius A* Controversy, Titan's Methane Clues, and Ozone Recovery Insights

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Synopsis

SpaceTime Series 27 Episode 140*Revisiting the Milky Way's Black Hole ImageA new study questions the accuracy of the first-ever image of Sagittarius A, the supermassive black hole at the centre of the Milky Way. Researchers suggest the image may not accurately represent its appearance, proposing a more elongated accretion disc instead of the ring-like structure previously released by the Event Horizon Telescope.*Methane in Titan's CrustData from NASA's Cassini spacecraft indicates that Saturn's moon Titan may have a methane-rich crust up to 10 kilometres thick. This insulating layer could explain Titan's shallow impact craters and its methane-rich atmosphere, providing insights into its unique geological and atmospheric dynamics.*Updates on Earth's Ozone HoleNASA reports that the annual ozone hole over Antarctica was smaller this year, ranking as the seventh smallest since recovery efforts began. The ozone layer is on track to fully recover by 2066, thanks to international agreements curbing ozone-depleting c