Make social videos in an instant: use custom templates to tell the right story for your business.
Record and instantly share video messages from your browser.
Broadcast your events with reliable, high-quality live streaming.
Get your team aligned with all the tools you need on one secure, reliable video platform.
Society for Popular Astronomy
In this talk, Prof. Iwan Williams discusses the nature of comets and their relationship to meteors.
Presented at a meeting of the Society for Popular Astronomy at SOAS, London, in January 2009