# Quasars – The Brightest Black Holes

- 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/quasars-brightest-black-holes)
- 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)

Quasars are among the most dramatic objects anywhere in the cosmos. They emit prodigious amounts of energy, all due to a supermassive black hole at the heart of a galaxy. Visible far across the Universe, quasars can be used to trace both the early life of galaxies, and the properties of the intervening space.

## Lectures

1. [Quasars – The Brightest Black Holes](https://invisiblenetwork.ai/learn/gresham/quasars-brightest-black-holes/baec24768ae8) (YouTube)