Exocomets in a planet nursery.

Exocomets have been detected in PDS 70, a young planetary system where planets are still forming, marking an extension of exocomet studies into earlier planetary evolution stages.

• Why it matters: Understanding exocomets in early-stage systems like PDS 70 helps fill a gap in knowledge about the formation and evolution of planetary systems, including the interactions between planets, planetesimals, and protoplanetary discs.
• What they did: The study presents evidence for exocomets in PDS 70, a system where planets are still forming, thus providing new insights into the early coexistence of planetary components.
• The result: This discovery suggests that exocomets are present during the planet formation process, offering a new perspective on the dynamics and evolution of young planetary systems.