# Comets - Visitors from the frozen edge of the Solar System

- Institution: Gresham College
- Speaker: Professor Carolin Crawford
- Year: 2013
- Level: For everyone
- Language: English
- Subjects: Astronomy and space
- Source: [Gresham College](https://www.gresham.ac.uk/watch-now/comets-visitors-frozen-edge-solar-system)
- Licence: [Educational use (Gresham College's terms)](https://www.gresham.ac.uk/terms-and-conditions)
- Who can watch: Tweens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

Millions of dirty icebergs orbit around the Sun in a huge cloud of debris almost a light-year in radius. These are all pristine relics of our primordial Solar nebula. Only when one tumbles towards the inner Solar system does it heat up to develop into the spectacular apparition known as a comet.

## Lectures

1. [Comets - Visitors from the frozen edge of the Solar System](https://invisiblenetwork.ai/learn/gresham/comets-visitors-frozen-edge-solar-system/7e96ce323492) (YouTube)