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How do scientists find out if an asteroid might hit our planet? And what do they do if it\u2019s on a collision course with Earth? We\u2019ll meet a planetary defender - an astronomer who uses radar telescopes to defend our planet from space rocks! Edgard Rivera Valent\xedn grew up in Puerto Rico, next to Arecibo, the world\u2019s most powerful radar telescope. Hear the story of how Edgard became a scientist superhero, and the supervillain asteroids they\u2019re up against.\xa0\n\nA bonus interview episode with Edgard is available to Patreon members who pledge at the $1 level or higher at patreon.com/tumblepodcast.\xa0\n\nCheck out more resources about Arecibo and asteroids on our blog, at sciencepodcastforkids.com.\n\nListen to Tumble en Espa\xf1ol! Search for \u201cTumble en Espa\xf1ol\u201d wherever you get your podcasts, or on our website under \u201cEn Espa\xf1ol.\u201d