# Circumstellar discs: What will be next?

## TL;DR

This paper forecasts future advancements in understanding circumstellar discs over the next 20 years, covering observational and theoretical developments in their properties, evolution, and relation to planetary systems.

## Contribution

It provides a comprehensive outlook on upcoming research directions and expected discoveries in the study of circumstellar discs.

## Key findings

- Improved knowledge of disc masses, sizes, and chemistry.
- Insights into disc evolution and planet formation.
- Enhanced understanding of debris discs and their links to planets.

## Abstract

This prospective chapter gives our view on the evolution of the study of circumstellar discs within the next 20 years from both observational and theoretical sides. We first present the expected improvements in our knowledge of protoplanetary discs as for their masses, sizes, chemistry, the presence of planets as well as the evolutionary processes shaping these discs. We then explore the older debris disc stage and explain what will be learnt concerning their birth, the intrinsic links between these discs and planets, the hot dust and the gas detected around main sequence stars as well as discs around white dwarfs.