{"version":"1.0","type":"rich","provider_name":"Acast","provider_url":"https://acast.com","height":250,"width":700,"html":"<iframe src=\"https://embed.acast.com/$/d348aacb-00cd-4b2d-9b3b-ee9d99cdb735/67c1f89d8a16e0b9768cf69b?\" frameBorder=\"0\" width=\"700\" height=\"250\"></iframe>","title":"How Nasa is tracking the “city-killer” asteroid","thumbnail_width":200,"thumbnail_height":200,"thumbnail_url":"https://open-images.acast.com/shows/61ba18761a8cbe923a3cf195/1740765151478-edc76894-6191-40c8-b030-28edb74918b8.jpeg?height=200","description":"<p>The risk of a large asteroid hitting Earth in 2032 has dropped to nearly zero – but it could still hit the moon. Nasa’s Acting Planetary Defense Officer explains how her team is assessing the risk.</p><p><br></p><p>Reporter: Patricia Clarke</p><p><br></p><p>Producer: Patricia Clarke</p><p><br></p><p>Host: Claudia Williams</p><p><br></p><p>Executive Producer: Rebecca Moore</p><p><br></p><p>Photography: Joe Mee</p>","author_name":"The Observer"}