Daily TV & radio guide - Friday

The Poet and the Astronaut (11.00 am R4). Welsh poet Gwyneth Lewis and her cousin Joe Tanner, who inspired her poem Zero Gravity (featured in a BBC2 programme in July 1999).
Belief (7.00 R3). Last in Joan Bakewell's series features Janet Suzman talking about life's big questions.
Lost Worlds: Looking for One Beginning (9.00 National Geographic). New archaeology series from John Romer - looks suspiciously like a retitling of C4's Great Excavations series from last year.
Some Liked It Hot (10.00 ITV). Start of a series on the British on holiday from archive/reminiscence documentarist Steve Humphries (of C4 Green and Pleasant Land ilk).
Book at Bedtime: 2001 - A Space Odyssey (10.45 R4, and from Monday). Fifth of ten-part reading of Arthur C. Clarke's novel.