Kavli Institute for Cosmology, Cambridge: A group of Cambridge astronomers, including Anthony Lasenby from the Cavendish Astrophysics Group and Kavli Institute for Cosmology, have made the first investigation of the sensitivity of the GAIA satellite to ultra-low frequency gravitational waves produced by supermassive black hole binaries (See Moore, Mihaylov, Lasenby & Gilmore, Phys. Rev. Lett. 119, 261102, 2017).