# Are we alone?

Planets have been found around many stars, and no sign of life beyond Earth has been confirmed. The Drake equation lays out what would have to be known to estimate it.

Connects to:
- [Lives of stars](https://mapideas.org/i/as_stars)
- [Light takes time](https://mapideas.org/i/as_light)

Sources:
- [Wikipedia: Drake equation](https://en.wikipedia.org/wiki/Drake_equation)

Source: https://mapideas.org/i/q_astro_alone · open on the map: https://mapideas.org/#q_astro_alone