what was the viewership of the above mentioned episode like?
The episode was well received by viewers, in particular, the show's fanbase,  watched by 8.84 million viewers in second week
The Stolen Earth
Overnight ratings estimated that "The Stolen Earth" was watched by viewers, approximately 38.3% of the total television audience. The final viewing figure was viewers, the second highest figure of the week beginning ; the highest was the UEFA Euro 2008 Final, watched by 8.84 million viewers. 
when did davros try to move the earth UNANSWERABLE who is this character? Davros is a character from the long-running British science fiction television series "Doctor Who" which episode does he feature in? "The Stolen Earth" episode how did his interaction with the doctor turn out? He is a major enemy of the series' protagonist, the Doctor, and is the creator of the Doctor's deadliest enemies, the Daleks what are the characteristics of this group of antagonists appearing on the show? Externally Daleks resemble human-sized pepper pots with a single mechanical eyestalk mounted on a rotating dome, a gun mount containing an energy weapon  resembling an egg whisk, and a telescopic manipulator arm usually tipped by an appendage resembling a sink plunger what served as an inspiration behind the creation of these characters? Terry Nation have they featured in comics as well? UNANSWERABLE
wiki:16682631
The Stolen Earth [SEP] Partial media blackout, broadcast, and ratings
Including its viewership on the BBC iPlayer and the following repeats on BBC Three and BBC One, "The Stolen Earth" was eventually viewed by 12.86 million viewers: over two million higher than the series average of 10.59 million. The episode depicted "" as the Doctor's phone number; the number is reserved by Ofcom for dramatic purposes. After transmission, approximately 2,500 viewers attempted to call the number and received a network message that explained the number was not in service. Ofcom consequently released a statement saying that the calls were free because the number did not exist.