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The Seen and the Unseen, hosted by Amit Varma, features longform conversations that aim to give deep insights into the subjects being discussed. Timeless and bingeworthy.
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Discovery of a Dangerous Half-Mile Asteroid Near the Sun. Bob Zimmerman discusses the discovery of a large asteroid inside the orbit of Venus, only the second one ever found so close to the sun. The asteroid is about half a mile across and difficult to spot due to the sun's glare. This raises concern because large asteroids out of sight pose a potential threat. Models suggest solar radiation should clear out small asteroids, but if they are larger, like this one or the previous mile-across discovery, their orbits remain stable.
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