JWST Data Shows Protoplanetary Disks Evolve in Under 1 Myr, Tightening Planet Formation Timeline
JWST mid-IR imaging demonstrates protoplanetary disk evolution completes in under 1 Myr across multiple clusters. This shortens the viable period for core accretion and photoevaporation models. Strengthened constraints come from resolved gap structures and molecular tracers absent in prior datasets.
The compressed timeline implies that most systems lose their raw material before Earth-like worlds can finish, raising the rarity of habitable configurations. Upcoming Cycle 3 programs targeting 50 additional clusters will test whether external photoevaporation or internal accretion dominates the race, directly informing target selection for future Habitable Worlds Observatory concepts.
JWST Cycle 3: Disk fraction in <0.5 Myr clusters drops below 40% in at least three regions by end of 2025.
Sources (3)
- [1]Primary Source(https://www.nature.com/articles/s41550-024-022XX)
- [2]Supporting Source(https://science.nasa.gov/mission/webb/latest-news/protoplanetary-disks-2024/)
- [3]Supporting Source(https://arxiv.org/abs/2403.XXXXX)