The originally published article incorrectly indicated the author’s affiliations. This has now been updated as follows:
J.E. McKevitt1,2,3, S. Beegadhur2, L. Ayin-Walsh2, T. Dixon2, F. Criscola2, D. Patadia2, S. Bulla2, J. Galinzoga2, B. Wadsworth2, C. Bornberg2, R. Sharma2, O. Moore2, J. Kent2, A. Zaripova2, J. Parkinson-Swift2 and A. Laad2
1Mullard Space Science Laboratory, University College London, Dorking, Surrey, UK, 2Conceptual Exploration Research, London, UK and 3Institute of Astrophysics, University of Vienna, Vienna, Austria