{"version":"1.0","type":"rich","provider_name":"Acast","provider_url":"https://acast.com","height":250,"width":700,"html":"<iframe src=\"https://embed.acast.com/$/6aee85559272884e574fd5f6/6af1085fb68b03091ecf8cb5?\" frameBorder=\"0\" width=\"700\" height=\"250\"></iframe>","title":"51 Pegasi b | The Giant That Circles Its Star in Four Days","description":"In the mid nineteen nineties, a young astronomer in Geneva watched a star's speed rise and fall in a perfect wave that repeated every few days, and he assumed his software was broken. The star was a faint dot in the autumn constellation Pegasus, measured night after night with a spectrograph on a hilltop in southern France. Making sense of that wave turned out to be far harder than anyone expected, because it broke rules that every textbook agreed on. So how can a giant planet circle its star in just four days?\r\n\r\nThis episode was created with artificial intelligence: AI-assisted script and AI-generated (synthetic) voice.","author_name":"Creators Obomedia"}