The Space Telescope Science Institute (STScI) presents live and archived webcasts that examine an array of science, technology, and business topics. Although these lectures primarily serve the scientific community, many are also designed for the public. STScI employees will be prompted to sign in to access restricted/internal webcasts.
Use the filter bar below to search by specific criteria including Type, Mission, Keyword, and/or Date. Click the Submit button to generate the query. Information and resources for each event may be found by clicking on the "Learn More" link and recordings may be watched via the "View Webcast" link. All times listed are Eastern Time, unless otherwise noted. Refer to our Webcast FAQs page for guidance with questions.
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Big Black Holes, Bigger Problems — Mysteries from the Dawn of Time to Our Own Backdoor
May 19, 2026 07:00 PMLecturesSpeaker: Erini Lambrides, NASA Goddard Space Flight Center Post-doctoral Fellow There is a massive black hole in the center of almost every galaxy. How did it get there, and importantly, how does it grow?…View Webcast -
The Metal-Poor Frontier: Understanding Low-Metallicity Stars and Galaxies Across Cosmic Time
May 11 through 15, 2026 12:00 AMSymposiaLongstanding uncertainties regarding the nature of the low-metallicity (≲20% Solar) Universe pose significant barriers to our interpretation of the chemical and physical properties of the near-pristine…View Webcast -
Divergent Small Bodies: Interstellar Interlopers and Dark Comets
May 6, 2026 03:00 PMColloquiaIn recent years, two entirely new classes of planetesimals have been discovered in the solar system: interstellar interlopers and dark comets. These still-enigmatic objects are challenging our understanding…View Webcast -
Protoplanetary Disk Dynamics for Binaries and Planets
April 29, 2026 03:00 PMColloquiaThe processes of star formation and planet formation are intricately linked through protostellar and protoplanetary disks. Material from the molecular cloud flows on to disks, where an array of physical…View Webcast -
Unraveling the Dynamical History of Andromeda
April 22, 2026 03:00 PMColloquiaThe Milky Way–Large Magellanic Cloud interaction has reshaped our understanding of how massive satellites drive disequilibrium in their host systems — and Andromeda (M31) tells a strikingly…View Webcast -
Characterizing the Brighter-Fatter Effect and Its Impact on PSF Size in a Roman Detector
April 16, 2026 04:00 PMLecturesMany of Roman's key science objectives require precise point spread function (PSF) calibration. In particular, weak gravitational lensing studies depend on measurements of very small distortions in…View Webcast -
Spring Colloquium: Presentations from Postdocs
April 15, 2026 03:00 PMColloquiaPresentations featuring Sarah Moran, Ciarán Rogers and Elizabeth Tarantino.View Webcast -
Results from the Dark Energy Survey and Looking Ahead
April 8, 2026 03:00 PMColloquiaThere is a vast amount of information stored in the large-scale structure of the universe. Over the past 10 years, the Dark Energy Survey (DES) has been using ever larger maps of the sky to learn about…View Webcast -
Stirring the Pot: How a Galaxy Quenches Star Formation Without Removing its Fuel
April 1, 2026 03:00 PMColloquiaModern day galaxies populate a bimodal distribution, in both morphology and color space. Their morphological and color properties are also inter-related, with lenticular and elliptical galaxies exhibiting…View Webcast -
Searching for Supermassive Black Hole Binaries in the Era of Multi-Messenger Astronomy
March 25, 2026 03:00 PMColloquiaSupermassive black hole binaries (SMBHBs) should be common in galactic nuclei as a result of frequent galaxy mergers. Yet they remain undetectable, especially during the final stage of their evolution.…View Webcast -
The Solar System Cookbook: What Is Webb Revealing about How Solar Systems Like Ours Come To Be?
March 18, 2026 07:00 PMLecturesSpeaker: Dr. Klaus Pontoppidan (NASA Jet Propulsion Laboratory) The James Webb Space Telescope has revolutionized our ability to study the formation and growth of new planetary systems, some with similarities…View Webcast -
Ready, Set, Roman! - Proposal FAQs and Office Hours
March 10, 2026 01:00 PMSoftware and DataJoin us for Part 2 of our Roman Proposal FAQs and get your Roman questions answered! The Cycle 1 Proposal Deadline is March 17, 2026. We will present frequently asked questions (FAQs) that have…View Webcast -
Giant Planets to Terrestrial Worlds from the Outside In
March 4, 2026 03:00 PMColloquiaPlanets exhibit extraordinary diversity in physical properties and orbital architectures, spanning more than four orders of magnitude in mass, separation, and age. Interpreting this landscape is challenging…View Webcast -
Ready, Set, Roman! - Proposal FAQs and Office Hours
March 3, 2026 01:00 PMSoftware and DataCome get your Roman questions answered! The Cycle 1 Proposal Deadline is March 17, 2026. We will present frequently asked questions (FAQs) that have been received by the Roman Help Desk that…View Webcast -
Supernova Remnants: Laboratories for Extreme Physics and Cosmic Calibration
February 25, 2026 03:00 PMColloquiaThe superior resolution and sensitivity of JWST at near- and mid-infrared wavelengths open new pathways to address key questions about the nature of supernovae through detailed investigations of young…View Webcast
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