Corrected entry: Romana gives the TARDIS's weight as five million kilograms in the planet's gravity. This is totally inconsistent with the TARDIS's weight in the rest of the series - for instance, in the third Doctor's time, a few soldiers were enough to lift it. And it can't be because of the planet having high gravity, as the Doctor and Romana would have been killed and K-9 crushed whenever they went outside the TARDIS.DaveJB
Corrected entry: Much is made of the fact that Tigella revolves anti-clockwise, as though that was unusual. Eight of the nine planets that orbit our Sun revolve anti-clockwise. The one exception is Venus, and it revolves so slowly clockwise (a mere 4mph) that it is barely rotating at all.