Recent content by davidbsimmons

I can accept the statement, "it was clear that this was not an Earth rock", from the scientific analysis of its composition. But how can scientists "{confirm] the space rock to be about 4.56 billion years old"? There is no mention of how they "confirmed" it. From the information given, the...

I'm thinking that the statement, "the comet ... passed through the inner solar system around 50,000 years ago," is purely theoretical, not observable, not provable, not scientific.