For many decades, in the standard story of our solar system, we have been told that asteroids, as well as comets and meteoroids are the so-called left-overs of the early solar system. In this view, comets and asteroids have been proposed as the possible source of our planet’s oceans. Of course, when spacecraft have visited comets they’ve not found anything like the dirty snowballs of conventional theory. In this conclusion to his three-part presentation, physicist Eugene Bagashov explores the latest scientific papers into the evidence for the water of the asteroids Bennu and Ryugu, respectively, and what it means for our understanding of the solar system’s history and origins.
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