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Caltech

Astronomy Colloquium

Wednesday, October 22, 2025
4:00pm to 5:00pm
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Cahill, Hameetman Auditorium
The Missing Link: Planet Formation from Millions to Billions of Years
Meredith Hughes, Chair, Astronomy Department; Associate Professor of Astronomy, Wesleyan University,

Debris disks are scaled-up analogs of our own Solar System's Kuiper Belt. While protoplanetary disks probe planet-forming conditions around pre-main sequence stars, and exoplanet surveys largely probe mature planetary systems, debris disks give us insight into the liminal, adolescent stage of planetary system evolution. I will present an overview of first results from the ALMA large program ARKS: the ALMA survey to Resolve exoKuiper belt Substructures, which provides the highest-resolution views to date of a substantial sample of 24 debris disks around nearby young stars.

For more information, please contact Philip Hopkins by email at [email protected] or visit /.