Due to a malfunction, the Doctor's TARDIS remains fixed as a blue British police box. The TARDIS has a vast interior but appears smaller on the outside, and is equipped with a " chameleon circuit" intended to make the machine take on the appearance of local objects as a disguise. The Doctor fled Gallifrey, the planet of the Time Lords, in a stolen TARDIS ("Time and Relative Dimension(s) in Space"), a time machine that travels by materialising into, and dematerialising out of, the time vortex. It has been the subject of many parodies and references in popular culture.ĭoctor Who follows the adventures of the title character, a rogue Time Lord with somewhat unknown origins who goes by the name " the Doctor". Doctor Who has also spawned numerous spin-offs, including comic books, films, novels, audio dramas, and the television series Torchwood (2006–2011), The Sarah Jane Adventures (2007–2011), K9 (2009–2010), and Class (2016). The series was relaunched in 2005 and since then, has been produced in-house by BBC Wales in Cardiff. There was an unsuccessful attempt to revive regular production in 1996 with a backdoor pilot in the form of a television film titled Doctor Who. The series originally ran from 1963 to 1989. The series is listed in Guinness World Records as the longest-running science-fiction television series in the world, as well as the "most successful" science-fiction series of all time, based on its overall broadcast ratings, DVD and book sales, and iTunes traffic. Fans of the series are sometimes referred to as Whovians. It has influenced generations of British television professionals, many of whom grew up watching the series. The series is a significant part of popular culture in Britain and elsewhere it has gained a cult following. The time-travelling feature of the plot means that different incarnations of the Doctor occasionally meet. Each actor's portrayal is distinct, but all represent stages in the life of the same character, and together, they form a single lifetime with a single narrative. The transition from one actor to another is written into the plot of the series with the concept of regeneration into a new incarnation, a plot device in which a Time Lord "transforms" into a new body when the current one is too badly harmed to heal normally. With various companions, the Doctor combats foes, works to save civilisations, and helps people in need.īeginning with William Hartnell, thirteen actors have headlined the series as the Doctor in 2017, Jodie Whittaker became the first woman to officially play the role on television. The TARDIS exterior appears as a blue British police box, which was a common sight in Britain in 1963 when the series first aired. The Doctor explores the universe in a time-travelling space ship called the TARDIS. The series depicts the adventures of a Time Lord called the Doctor, an extraterrestrial being who appears to be human. Extensive deposition combined with the potential for methane release may have contributed to the large population of pitted cones in this area of the Utopia basin.Doctor Who is a British science fiction television series broadcast by the BBC since 1963. The area of Utopia basin that contains the large population of pitted cones is adjacent to the highland/lowland boundary where extensive deposition would have occurred. Three locations of methane release have been observed on Mars, two of which are located on the same outer ring of Isidis basin that intersects the pitted cone population. While methane is not currently being released at the location of the pitted cones it could have been in the past. On Mars this possible source of methane could combine with the infiltrated water to generate clathrates. It has been shown that methane can be generated at the mantle on Earth. If this is true on Mars as well, the fractures could act as conduits for water from Utopia Planitia, the site of a large, putative water body. On Earth, seismic investigations have shown that the outer rings of the Chicxulub multi-ring impact basin extend to the Mohorovičić discontinuity (Moho). The concentration of pitted cones is located where Utopia basin intersects Isidis basin both features are multi-ring impact basins. This particular area of pitted cones has been attributed to mud volcanism several factors may have facilitated extensive mud volcanism at this location. The largest areal concentration of pitted cones on Mars is located in the southwest section of Utopia basin.
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