In this month’s instalment, Edward Gomez and I chat about interplanetary explorers to the icy worlds of Pluto and Ceres, and Cassini’s capture of interstellar dust as it passed through the Saturn system. And, of course, we look ahead to May’s Transit of Mercury, which we’ll be viewing with members of the public and school groups here in Cardiff.

Further afield, in both time and space, is the Breakthough Starshot initiative, which aims to send a fleet of tiny spacecraft to another star system – if they can pull it off, that is!

Originally broadcast on 28th April 2016 as part of Pythagoras’ Trousers on Radio Cardiff.