Seeing the Invisible. In the show this time, we talk to Syksy Rasanen about black holes as dark matter candidates and the future of scientific publishing [07:30 - 46:01], Hongming Tang rounds up the latest news [01:26-07:16] and we find out what we can see in the May night sky from Ian Morison, Haritina Mogosanu and Samuel Leske [01:14:18 - 01:39:03].