[RightWhale]

to determine if the unusual circular crater was created by a meteor or comet

How could they know the difference? Do they know the difference between meteor and and meteorite or between asteroid and comet? Does NASA give science writing assignments to freshman staff not yet qualified to write for the sports page?

[blam]

"How could they know the difference? Do they know the difference between meteor and and meteorite or between asteroid and comet? Does NASA give science writing assignments to freshman staff not yet qualified to write for the sports page?"

I don't know the answer to either of your questions but you know that everything has been 'dumbed down' so that every one will feel better.