Physics World magazine issue from early 2018 with articles on the recently observed merger of two neutron stars

Physics World: Cosmic Impact: colliding neutron stars send ripples through physics. Volume 31, No.1 January 2018.

While most magazines from 2015 onwards in Stephen Hawking's office were transient, this one contains articles on the last groundbreaking astronomical observation of Hawking's lifetime, the detection of gravitational waves coming from the merger of two neutron stars and their simultaneous observation by telescopes in multiple wavelengths, around the world and in space.

Most of the journals and magazines in Stephen Hawking's office were transient items, which would have entered upon publication, and gradually circulated out in a relatively short time frame. The vast majority of such items in the office date from the last years of Stephen's life, from 2015 onwards, and haphazardly reflect on subscriptions, affiliations and societies where he happened to be most active at that moment in time.