English language broadcast - 03/07/12

After the newscast comes "Listeners Club," in which Alison Hughes is joined in answering your cards, letters and e-mails by Frank Smith and Justin Coe. Then, in "North By Southwest," Nicholas Jackson investigates the dark side of black holes, quasars, distant galaxies and extra-terrestrial life with astronomer Dr Marek Kakula of the Royal Observatory, Greenwich.