# Dimitar Sasselov: How we found hundreds of potential Earth-like planets

Astronomer Dimitar Sasselov and his colleagues search for Earth-like planets that may, someday, help us answer centuries-old questions about the origin and existence of biological life elsewhere (and on Earth). Preliminary results show that they have found 706 "candidates" -- some of which further research may prove to be planets with Earth-like geochemical characteristics.

- Kind: Talk
- Year: 2010
- Runtime: 18 min
- By: TED.com
- Genres: Education, Science, Space
- Archive: [Internet Archive](https://archive.org/details/DimitarSasselov_2010G)
- Licence or status: [CC BY-NC-ND 3.0](http://creativecommons.org/licenses/by-nc-nd/3.0/) (as the archive states it)
- Who can watch: Tweens profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

[Watch now](https://invisiblenetwork.ai/watch/archive/ia/DimitarSasselov_2010G?play=1)