If you live near Hitchin come along and chat between ten o’clock and two. I’ll be signing copies of Voyager: 101 Wonders between Earth and the Edge of the Cosmos and The Big Questions: The Universe and answering questions about astronomy and space in Waterstone’s, 32 Market Place, Hitchin SG5 1DY. My thanks to the manager, Alison Fell-Gordon, for inviting me.

To see whether The Big Questions: The Universe is in stock in a Waterstone's near you or to buy online, click here.

To see whether Voyager: 101 wonders between Earth and the edge of the cosmos is in stock in a Waterstone's near you or to buy online, click here.