- Title: The Planets: The Search For Planet X
- Date: 30th August 1989
- Summary: THIS WEEK, HEATHER COUPER MEETS CLYDE TOMBAUGH - THE ONLY MAN ALIVE TO HAVE DISCOVERED A PLANET. BUT HE WAS NOT THE FIRST. THAT HONOUR GOES TO WILLIAM HERSCHEL, WHO DISCOVERED URANUS IN 1781. 65 YEARS LATER, ASTRONOMERS FOUND NEPTUNE. AND WHEN, IN 1930, TOMBAUGH DISCOVERED PLUTO, OUR SOLAR SYSTEM SEEMED COMPLETE - OR DID IT? CLYDE TOMBAUGH THINKS NOT: HE RECKONS THERE'S A PLANET BEYOND PLUTO - PLANET X. SO DOES BOB HARRINGTON, WHO EVEN THINKS HE KNOWS WHERE TO LOOK FOR IT. CHAS BEICHMAN RECKONS ITS SIGNAL IS HIDDEN IN DATA RETURNED BY THE IRAS SATELLITE. OR MIGHT THE TRUSTY VOYAGER PROBES COME UP WITH THE ANSWER IN THE END? NB THIS PROGRAMME HAS BEEN UPDATED FOR REPEAT SHOWING
- Description:THE PLANETS IS A SERIES OF PROGRAMMES ABOUT THE SUN'S FAMILY - OUR LOCALNEIGHBOURHOOD IN SPACE. AIMED AT ANYONE OVER TEN,THE PROGRAMMES PUT EACHPLANET IN PERSPECTIVE - HISTORICALLY,CULTURALLY,AND SCIENTIFICALLY.
- Broadcaster:Channel 4
- Collection: Channel 4
- Genre:Documentary and Factual
- Producer:Moving Picture Company
- Programme Episode:Episode 6
- Transmission Date:30/08/1989
- Rights:On Request
- Decade: 1980s