The ninth episode of Mars airs on the National Geographic Channel. The series is a hybrid drama/documentary about a fictional human colony on Mars in 2042, contrasted against efforts to prepare for such a mission in the present day. The series is produced by Ron Howard (Apollo 13). 
The CW airs the 98th episode of The Flash, a modern-day reboot of DC Comics’ superhero starring Grant Gustin.
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The 851st episode of Doctor Who airs on BBC1 (the 152nd episode since the series’ revival). Jodie Whittaker, Bradley Walsh, Tosin Cole and Mandip Gill star. Sharon D. Clarke (The Singing Detective) and Kevin Eldon (Hyperdrive) guest star.
The 146th episode of Arrow, a modern-day reboot of DC Comics’ Green Arrow superhero starring Stephen Amell, airs on the CW.
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The CW airs the 58th episode of Legends Of Tomorrow, starring Caity Lotz, Matt Ryan, Brandon Routh, and Tala Ashe. Paul Reubens guest stars.
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The tenth episode of Mars airs on the National Geographic Channel. The series is a hybrid drama/documentary about a fictional human colony on Mars in 2042, contrasted against efforts to prepare for such a mission in the present day. The series is produced by Ron Howard (Apollo 13). Esai Morales guest stars.
The CW airs the 99th episode of The Flash, a modern-day reboot of DC Comics’ superhero starring Grant Gustin. Tony Todd guest stars.
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The CW airs the 100th episode of The Flash, a modern-day reboot of DC Comics’ superhero starring Grant Gustin. Stephen Amell (Arrow), Melissa Benoist (Supergirl), Tyler Hoechlin (Superman & Lois), and Jeremy Davies (Lost, Twister) guest star in the first episode of a much-anticipated DC crossover event.
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The 852nd episode of Doctor Who airs on BBC1 (the 153rd episode since the series’ revival), bringing the eleventh season of the new series to an end (though a special episode is yet to be shown on New Years’ Day). Jodie Whittaker, Bradley Walsh, Tosin Cole and Mandip Gill star. Phyllis Logan (Downton Abbey, Lovejoy), Mark Addy (The Full Monty, Game Of Thrones), and Percelle Ascott (Wizards vs. Aliens) guest star.
The 147th episode of Arrow, a modern-day reboot of DC Comics’ Green Arrow superhero starring Stephen Amell, airs on the CW. Grant Gustin (The Flash), Melissa Benoist (Supergirl), Tyler Hoechlin, Ruby Rose (Batwoman), John Wesley Shipp (The Flash), and John Barrowman (Torchwood, Doctor Who) guest star in part two of a crossover event uniting most of the CW’s DC Comics-inspired series.
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The CW airs the 59th episode of Legends Of Tomorrow, starring Caity Lotz, Matt Ryan, Brandon Routh, and Tala Ashe. Paul Reubens and Jane Carr guest star.
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The 11th episode of Mars airs on the National Geographic Channel. The series is a hybrid drama/documentary about a fictional human colony on Mars in 2042, contrasted against efforts to prepare for such a mission in the present day. The series is produced by Ron Howard (Apollo 13). Esai Morales guest stars.
The 12th episode of Mars airs on the National Geographic Channel, concluding the series’ second season. The series is a hybrid drama/documentary about a fictional human colony on Mars in 2042, contrasted against efforts to prepare for such a mission in the present day. The series is produced by Ron Howard (Apollo 13). Esai Morales guest stars.
Fox airs the 13th episode of the science fiction comedy-drama The Orville, starring and created by Seth McFarlane, opening the show’s second season. Jason Alexander (Seinfeld) and Will Sasso (Mad TV) guest star.
The 853rd episode of Doctor Who airs on BBC1 (the 154th episode since the series’ revival). Jodie Whittaker, Bradley Walsh, Tosin Cole and Mandip Gill star. Charlotte Ritchie (Call The Midwife), Nikesh Patel (Artemis Fowl), and Daniel Adegboyega (Skyfall, Transformers: The Last Knight, Nightflyers) guest star in an episode featuring the return of the Daleks.
Streaming service CBS All Access debuts the fourth episode of Short Treks, a series of 15-20 minute short stories set in the Star Trek universe (in this instance, aboard the U.S.S. Discovery from Star Trek: Discovery). Rainn Wilson (The Office) stars and directs.
Fox airs the 14th episode of the science fiction comedy-drama The Orville, starring and created by Seth McFarlane. Kelly Hu guest stars in an episode filmed for, but held over from, season one.
Fox airs the 15th episode of the science fiction comedy-drama The Orville, starring and created by Seth McFarlane. Robert Picardo (Star Trek: Voyager), John Billingsley (Star Trek: Enterprise), and Patrick Warburton (The Tick, A Series Of Unfortunate Events) guest star in an episode that marks the departure of series regular Halston Sage.
The CW airs the 101st episode of The Flash, a modern-day reboot of DC Comics’ superhero starring Grant Gustin.
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Streaming service CBS All Access releases the 16th episode of Star Trek: Discovery, the beginning of the show’s second season. Anson Mount joins the series as Captain Christopher Pike (a character first devised by Gene Roddenberry for the 1964 Star Trek pilot, The Cage). James Frain and Tig Notaro guest star.
Fox airs the 16th episode of the science fiction comedy-drama The Orville, starring and created by Seth McFarlane. Michaela McManus and Patrick Warburton (The Tick, A Series Of Unfortunate Events) guest star.
The 148th episode of Arrow, a modern-day reboot of DC Comics’ Green Arrow superhero starring Stephen Amell, airs on the CW.
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The CW airs the 102nd episode of The Flash, a modern-day reboot of DC Comics’ superhero starring Grant Gustin.
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Streaming service CBS All Access releases the 17th episode of Star Trek: Discovery. Sheila McCarthy (Little Mosque On The Prairie) and Andrew Moodie (Dark Matter) guest star.
Fox airs the 17th episode of the science fiction comedy-drama The Orville, starring and created by Seth McFarlane. Ted Denson (Cheers, Becker) guest stars in an episode that welcomes new series regular Jessica Szohr (Gossip Girl) to the cast.
The 149th episode of Arrow, a modern-day reboot of DC Comics’ Green Arrow superhero starring Stephen Amell, airs on the CW.
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The CW airs the 103rd episode of The Flash, a modern-day reboot of DC Comics’ superhero starring Grant Gustin. Robert Picardo (Star Trek: Voyager, Stargate Atlantis) guest stars.
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Streaming service CBS All Access releases the 18th episode of Star Trek: Discovery. Michelle Yeoh, Alan Van Sprang (Shadowhunters: The Mortal Instruments, The Tudors) and Bahia Watson (The Handmaid’s Tale) guest star.
Fox airs the 18th episode of the science fiction comedy-drama The Orville, starring and created by Seth McFarlane. Norm MacDonald guest stars.
The 150th episode of Arrow, a modern-day reboot of DC Comics’ Green Arrow superhero starring Stephen Amell, airs on the CW. Grant Gustin (The Flash) and Caity Lotz (Mad Men, Legends Of Tomorrow) guest star.
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