Zephyr Penoyre (one of the paper's authors, then at the IoA in Cambridge) gave a talk about his proposal for a Moon-tethered spaceline earlier this year, and is

Zephyr Penoyre (one of the paper's authors, then at the IoA in Cambridge) gave a talk about his proposal for a Moon-tethered spaceline earlier this year, and is available here: https://upload.sms.cam.ac.uk/media/2921572 https://upload.sms.cam.ac.uk/media/2921572 The talk starts with a polemic about the way research is done, but the physics starts about 16:40.