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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NASA's Nancy Grace Roman Space Telescope: Countdown to Exploration
August 11, 2026 07:00 PMLecturesSpeakers: Dr. Denton Gibson (NASA's Kennedy Space Center) and Dr. Jessica Lu (University of California, Berkeley) The Nancy Grace Roman Space Telescope—NASA’s next astrophysics flagship…View Webcast -
2026 HotSci at JHU/STScI
August 5, 2026 03:00 PMColloquiaHotSci at JHU/STScI featuring Matthew Burger (STScI) on Exospheric Escape from a Bare-Rock Planet Orbiting a Solar-Type Star, Adarsh Ranjan (STScI) on From Metal-rich Spirals to Pristine Dwarfs:…View Webcast -
2026 HotSci at JHU/STScI
July 29, 2026 03:00 PMColloquiaHotSci at JHU/STScI featuring Jimena Rodriguez (STScI) on From Massive Young Stellar Objects to Stellar Clusters: Resolving the Earliest Stages of Star Formation with JWST, Rodrigo Angulo (JHU) on Astronomical…View Webcast -
2026 HotSci at JHU/STScI
July 22, 2026 03:00 PMColloquiaHotSci at JHU/STScI featuring Jayashree Behera (STScI) on Joint Multiband Photometry with Crowdsource, Jack Neustadt (JHU) on Kinematic Stratification in Extremely Red Quasars Revealed by…View Webcast -
Into the Deep and Beyond: Webb’s First Four Years
July 21, 2026 04:00 PMLecturesSpeaker: Dr. Macarena Garcia Marin, STScI and European Space Agency The Webb Space Telescope is the largest and most sophisticated space telescope ever built. Its successful launch in 2021 marked…View Webcast -
2026 HotSci at JHU/STScI
July 15, 2026 03:00 PMColloquiaHotSci at JHU/STScI featuring Qier An (JHU) on Unveiling Massive Substellar Companions: A Multi-Method Approach and Nick Indriolo (STScI) on Mapping the Cosmic-Ray Ionization Rate in the…View Webcast -
Planetary Defense: The Risk, Recent Achievements, and Work to Go
July 14, 2026 10:00 AMColloquiaAsteroid impacts pose a credible threat to humanity, but--unlike many types of natural disasters--they are also potentially preventable. Planetary defense encompasses all efforts to detect and warn of…View Webcast -
2026 HotSci at JHU/STScI
July 8, 2026 03:00 PMColloquiaHotSci at JHU/STScI featuring Alex Malz (STScI) on Leveraging Information Theory for Time-Domain Astrophysics, Rebecca Levy (STScI) on Small but Mighty: Young Massive Star Clusters in Nearby Starburst…View Webcast -
2026 HotSci at JHU/STScI
July 1, 2026 03:00 PMColloquiaHotSci at JHU/STScI featuring Natalia Oliveros Gomez (JHU) on Linking Variability and Atmospheric Structure in the Benchmark Brown Dwarf Binary WISE 1049AB, Steven Goldman (STScI) on Tracing…View Webcast -
2026 HotSci at JHU/STScI
June 24, 2026 03:00 PMColloquiaHotSci at JHU/STScI featuring Elena Manjavacas (ESA for STScI) on Stable Rotational Modulation Across Seven Years Baseline for the Planetary-mass Companion Ross 458C, David Coulter (JHU/STScI) on Spectroscopic…View Webcast -
2026 HotSci at JHU/STScI
June 17, 2026 03:00 PMColloquiaHotSci at JHU/STScI featuring Logan Jones (STScI) on Pinwheeling PAHs: A JWST Tour of M101 and its Interstellar Medium, Andrew Fox (STScI) on Dark Matter Minihalos and M94 Cloud-9, and Leah…View Webcast -
2026 HotSci at JHU/STScI
June 10, 2026 03:00 PMColloquiaHotSci at JHU/STScI featuring Jared Bull (JHU) on Uncovering the Space Weather of the Cold, Planetary-mass, Ross 458C and Ryan Rickards Vaught (STScI) on Hunting for Ionization Sources…View Webcast -
2026 HotSci at JHU/STScI
June 3, 2026 03:00 PMColloquiaHotSci at JHU/STScI featuring Ian Wong (STScI) on Exploring the Compositional Diversity of Small Bodies in the Solar System with JWST and Chris Nagele (JHU) on Radiative Transfer Post-Processing…View Webcast -
Calibrating Galaxy Formation Models for the Roman Era
May 21, 2026 04:00 PMLecturesThe Nancy Grace Roman Space Telescope will soon conduct one of the largest spectroscopic galaxy surveys ever attempted, mapping tens of millions of galaxies to study cosmic acceleration and galaxy evolution.…View Webcast -
Mapping Dark Matter with Stellar Streams
May 20, 2026 03:00 PMColloquiaStellar streams, the tidally-disrupted remnants of globular clusters and dwarf galaxies orbiting throughout the Milky Way's halo, are some of the most powerful tools for mapping dark matter across…View Webcast
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