A second chance to hear Adam Walton discussing the Voyager space missions which were launched in 1977. Now, 33 years on, Voyager I has reached the edge of the solar system and is ready to enter interstellar space.

Broadcast Saturday 4th June at 6.30am.

Listen to the latest programme online

Adam chats to Voyager's current Project Manager Suzanne Dodd on the line from NASA's Jet Propulsion Laboratory in California, and is joined in the studio by space scientists from Wales. Suzanne previously worked on Voyager during the Uranus and Neptune encounters, and is looking forward to the challenge of maintaining the two spacecraft in the coming decade and beyond.

Adam is also joined by Dr Edward Gomez who is Education Director for Las Cumbras Observatory at Cardiff University, who explains how Voyager, with its spectacular images of the outer planets, has opened our eyes to many features in the solar system such as the "chaos theory" of Jupiter's great red spot.

Also in the studio is Dr Chris North, from Cardiff School of Physics and Astronomy who says the mission has been a source of inspiration for many to enter astronomy and physics.

Professor Manuel Grande, head of Solar System Physics at Aberystwyth University, also joins the programme says that Voyager has given us unprecendented detail about the moons of Jupiter and Saturn. For example Europa having an ocean of water, and the Earth-like qualities of Titan.

The programme also discusses the "golden record" aboard each of the Voyager probes, which has sounds and music, and greetings in 55 languages.

Voyager - The Interstellar Mission

Voyager images

Voyager golden record

BBC News - Voyager near solar system edge