Yeah, it was quite a compelling story, and it's at least a genuinely beautiful and intriguing tablet. The author Hempsell does have some talent though, in seemingly getting a reputable university to publish his book... I'm thinking he was quite canny in finding this attractive untranslated tablet with little else written about it, and then employing enough knowledge about a combination of different subjects (ancient Sumerian, asteroid orbits, Alpine geology) that no single reviewer was able or motivated to properly evaluate all the arguments. Or he just had a friend at the press.

There are true stories that don't involve asteroids but are just as compelling. Anything by Irving Finkel, such as:

https://youtu.be/LUxFzh8r384

Erich von Däniken comes to mind.