In 1984, the first debris disk orbiting another star was observed around Vega. Think of a debris disk as the leftovers from solar system formation, analogous to the asteroid or Kuiper belts.
Caption [left] A Hubble Space Telescope false-color view of a 100-billion-mile-wide disk of dust around the summer star Vega. Hubble detects reflected light from dust that is the size of smoke ...