Gold miners discover 100 million-year-old meteorite crater Down Under

Sep 24, 2020
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Quote: "This pucker is where shattered rocks came back to the surface after the comet struck"

The rest of the article says it was an asteroid, but near the end of the article you state comet. Which is it please?
 
Aug 10, 2020
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"The energy released when the [meteorite] impacted would have been more than the combined energy from every atomic test ever conducted," Meyers told Resourc.ly.
I find this hard to believe. Does this also include the largest nuclear explosion ever tested by the Russians? The Tsar Bomba?