On Monday morning 9 February, trains between The Hague and Delft were cancelled and traffic lights were not working due to a power outage. Is this an isolated incident or a sign of an increasingly vulnerable electricity grid? Power grid professor Peter Palensky: “Overall, the infrastructure is improving.”

Humans will soon be heading back to the moon, but the launch of Artemis II, which was planned for this week, has been postponed until March due to technical problems. What makes this launch unique and why is launching so difficult? Five questions for Sebastien Welters from student rocket association DARE.