The Time Tunnel - Season 1 - Eps 3: End of the World
Dony and Toug arrive in 1910, where a local town is in a panic over the arrival of Halley's Comet. Tony is caught in a cave-in near two hundred miners, while Doug is unable to get help from the superintendent, Henderson, who believes they're all doomed because of the comet. Doug digs out Tony on his own, and tries to convince the local astronomer, Ainsley, who has everyone in a panic. While Tony tries to set up a rescue, the Project team try to send Doug a radioscope through the Tunnel. That plan fails, but Doug makes a primitive radioscope and shows Ainsley the gravitational forces that will cause Halley's Comet to deviate. Ainsley convinces the townspeople they are not doomed, and everyone teams up to rescue the miners. Meanwhile the Tunnel sucks in Halley's Comet and the power flow almost sucks Jerry into the Tunnel before they can cut pull the plug.
About The Time Tunnel

Title: The Time Tunnel
First Air Date: 1966-09-09
Last Air Date: 1967-04-07
Status: Ended
Rating: 7.602/10 (from 171 votes)
Language: EN
Seasons: 2
Total Episodes: 30
Network: ABC
Genres: Action & Adventure, Sci-Fi & Fantasy, Drama
Production Companies: Irwin Allen Productions, 20th Century Fox Television, ABC, Kent Productions
Synopsis
The Time Tunnel is a 1966–1967 U.S. color science fiction TV series, written around a theme of time travel adventure. The show was creator-producer Irwin Allen's third science fiction television series, released by 20th Century Fox and broadcast on ABC. The show ran for one season of 30 episodes. Reruns are viewable on cable and by internet streaming. A pilot for a new series was produced in 2002, although it was not picked up.
Cast

James Darren
Tony Newman

Robert Colbert
Doug Phillipps

Whit Bissell
General Heywood Kirk

Lee Meriwether
Dr. Ann McGregor

John Zaremba
Dr. Raymond Swain