The scientific face of £50, Hubble’s law renamed and bake-off physics
Excerpts from the Red Folder
Redefining the kilogram: the November 2018 issue of Physics World is now out
Find out why it'll be au revoir to the International Prototype Kilogram at a meeting in Paris this month
Try the Physics World dark-matter flowchart: what kind do you prefer?
To celebrate Dark Matter Day, follow our flow chart to work out what this mysterious stuff could be
Astronomy Photographer of the Year, Sir Peter Mansfield beer and Hawking auction
Excerpts from the Red Folder
What teaching physics in Kenya taught me about inspiring students to study maths and science
Artur Donaldson reflects on how Kenya’s Digital Literacy Programme is benefiting high school students
Quentin Blake illustrates characters from science and technology, Breakthrough Prize’s all-male selection committee
Excerpts from the Red Folder
Awards honour physics start-ups
A night out at the Institute of Physics' annual Business Awards shows how companies old and new are using physics to create innovative products
Posthumously publishing Hawking
Hawking’s hope, humour and cosmic insight kindle curiosity at the press launch of his final book, Brief Answers to the Big Questions
Moons can have moons and craters that celebrate Earthrise
Excerpts from the Red Folder
Stephen Hawking’s ‘final paper’ on hairy black holes hits the headlines
Work is posted online as the late cosmologist’s “final book” is about to be published
