Sun Probe

"Sun Probe" is an episode of Thunderbirds, a British Supermarionation television series created by Gerry and Sylvia Anderson and filmed by their production company AP Films (APF) for ITC Entertainment. Written by Alan Fennell and directed by David Lane, it was first broadcast on 9 December 1965 on ATV Midlands as the 11th episode of Series One. It is the fourth episode in the official running order.

Set in the 2060s, the series follows the exploits of International Rescue, an organisation that uses technologically advanced rescue vehicles to save human life. The main characters are ex-astronaut Jeff Tracy, founder of International Rescue, and his five adult sons, who pilot the organisation's main vehicles: the Thunderbird machines. In "Sun Probe", Thunderbirds 2 and 3 are launched to save a crew of astronauts whose spacecraft is locked on a collision course with the Sun.