So, all the astronomers on Earth are in conspiracy and keep quiet. All the amateur astronomers just don't tell us anything....
Oh an by the way. A comet is not a planet. It may have had a long tail, but the comet itself wasn't big. If there is written that comet and it's tale were as long as Jupiter is BS. No professional or amateur astronomer wouldn't say that, tail doesn't mean anything, it may consist of gas or debris. Get a brian moran.