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5 facts · checked October 31, 2026

Today’s Useless Fact

Newton, Hawking and Data Held the Same Job

Isaac Newton, Stephen Hawking and Star Trek's Data all held the Lucasian Professorship of Mathematics at Cambridge, Data only in a future timeline.

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Trivia Questions

Four famous TNG guest stars. Only one of them played themselves on screen. Who?

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One of them was a real astronaut, but she still played a fictional officer.

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Answer: Stephen Hawking

In "Descent, Part I," Data plays poker on the holodeck against simulations of Isaac Newton, Albert Einstein and Stephen Hawking, with Hawking playing himself. StarTrek.com calls him the only actor to play himself in the franchise. The other three were real guest stars too, but all of them played fictional characters.

  • Mae Jemison: She played transporter officer Palmer in "Second Chances" (1993).
  • Stephen Hawking: He played himself at Data's holodeck poker table in "Descent, Part I" (1993).
  • Ashley Judd: She played Ensign Robin Lefler, seen in Season 5's "The Game."
  • Billy Campbell: He played the rogue captain Thadiun Okona in "The Outrageous Okona" (1988).

Sources: StarTrek.com, “A Look Back at Descent” ↗ · StarTrek.com, “10 of the Best TNG Guest Stars” ↗

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