Of course it only looks like a comet to those finite thinkers; actually it's a manned spacecraft from back when Mars was an inhabited planet and Earth was boiling hot, before the Sun cooled down. Dr Who has nothing on this time and space travelling rocket.
But this information will not be considered acceptable to finite thinkers.
Want to know more about infinite thinking? Buy my novel; Death Flies, Missing Girls and Brigitte Bardot.

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Funny how BBC Breakfast were comparing it to Dr Who, if Dr Who was not on BBC I wonder what they compare it to then ?