Many older stars appear to be surrounded by very tenuous dust
disks that may arise from continuing collision between larger bodies
(e.g. asteroids) which have formed previously.
- Our own Solar System is permeated by dust produced by asteroid
collisions and the passage of comets throught the Solar System.
But Most Importantly of All...
- Astronomers are now regularly detecting planets in
orbit around other stars. At present there are approximately
400 other planets known and more being found on a regular basis.