<Table> <Tr> <Th_colspan="2"> TARDIS </Th> </Tr> <Tr> <Td_colspan="2"> The current TARDIS prop used since 2010 . </Td> </Tr> <Tr> <Th_colspan="2"> Plot element from the Doctor Who television series </Th> </Tr> <Tr> <Th> Publisher </Th> <Td> BBC </Td> </Tr> <Tr> <Th> First appearance </Th> <Td> An Unearthly Child (23 November 1963) </Td> </Tr> <Tr> <Th> Created by </Th> <Td> (Series) <Ul> <Li> Sydney Newman </Li> <Li> C.E. Webber </Li> <Li> Donald Wilson </Li> </Ul> (Story) Anthony Coburn </Td> </Tr> <Tr> <Th> Genre </Th> <Td> Science fiction </Td> </Tr> <Tr> <Th_colspan="2"> In - story information </Th> </Tr> <Tr> <Th> Type </Th> <Td> Time machine / spacecraft </Td> </Tr> <Tr> <Th> Function </Th> <Td> Travels through time and space </Td> </Tr> <Tr> <Th> Specific traits and abilities </Th> <Td> Can change its outer dimensions and inner layout, impregnable, telepathic </Td> </Tr> <Tr> <Th> Affiliation </Th> <Td> Time Lords The Doctor </Td> </Tr> </Table> <Tr> <Th_colspan="2"> TARDIS </Th> </Tr>

How many versions of the tardis are there