Tim Peake sees the city lights of his capital city burning bright from the International Space Station last night. He tweeted: “London midnight Saturday – I’d rather be up here…but only just!!”
Dark matter, the mysterious substance that constitutes most of the material universe, remains as elusive as ever. Although experiments on the ground and in space have yet to find a trace of dark matter, six or more years of data from NASA’s Fermi Gamma-ray Space Telescope has broadened the mission’s dark matter hunt using some novel approaches.