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.

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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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  1. Enceladus's Plume-Derived 'Snow' Fall

    October 4, 2024 12:00 PM
    Lectures
    Tectonic pit chains are geologic landforms observed on many solar system bodies, and in the outer solar system they are most clearly observed on Enceladus. Pit chains form above a dilational fault or extensional…
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  2. Cosmic Acceleration in the Roman Era

    October 2, 2024 03:00 PM
    Colloquia
    Cosmic acceleration is one of the most surprising cosmological discoveries of the past century. Even the "simplest" explanations require new, cosmologically dominant energy components with exotic…
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  3. White Dwarf Supernovae

    September 25, 2024 03:00 PM
    Colloquia
    Type Ia supernovae (SN Ia) play a starring role in our view of the Universe.  Observations of SN Ia led to two cosmological surprises: the discovery of the accelerating Universe and the Hubble Constant…
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  4. Fall Colloquium: Presentations from Incoming STScI Postdocs

    September 18, 2024 03:00 PM
    Colloquia
    Presentations featuring Paul Bennet, Farhan Hasan, Jegug Ih, Ryan Richards Vaught, and Mans Holmberg.
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  5. The Thirty Meter Telescope: Progress and Prospects

    September 11, 2024 03:00 PM
    Colloquia
    The Thirty Meter Telescope is a top-ranked priority of the Astro 2020 Decadal Survey because its combination of very large aperture and adaptive optics opens up vast areas for unique observational work…
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  6. High Performance Infrared Detectors: The Infrared Focal Plane Arrays in NASA’s Flagship Astrophysics Missions

    September 10, 2024 10:00 AM
    Colloquia
    Infrared astronomy is dependent on hybrid CMOS infrared focal plane arrays (FPAs).  The most advanced FPAs are those that use HgCdTe as the detector material.  This talk will start with a pedagogical…
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  7. Hot, Warm, Cold, and Frigid Exoplanets from the Nancy Grace Roman Space Telescope

    September 5, 2024 03:30 PM
    Colloquia
    The Nancy Grace Roman Space Telescope, or Roman, is NASA’s next large astrophysics mission, due to be launched in late 2026. Roman will have a wavelength range, aperture, and angular resolution similar…
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  8. NASA's Next Big Thing: The Nancy Grace Roman Space Telescope

    September 3, 2024 08:00 PM
    Lectures
    Speaker: Ori Fox (Space Telescope Science Institute) NASA's upcoming Nancy Grace Roman Space Telescope is readying for launch in late 2026. Roman will be able to survey the sky 1,000 times…
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  9. Year Two in Review: Groundbreaking Science Discoveries by JWST

    August 6, 2024 08:00 PM
    Lectures
    Speaker: Macarena Garcia Marin (Space Telescope Science Institute/European Space Agency) The James Webb Space Telescope is the largest, most sophisticated telescope ever launched into space. After two…
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  10. 2024 HotSci at JHU/STScI: The Future of HST

    July 31, 2024 03:00 PM
    Colloquia
    "The Future of HST" featuring Christina Lindberg (JHU) on Tracing the Multi-Phase ISM via Dust Extinction in Nearby Galaxies with UV Photometry, Calum Hawcroft (STScI) on Massive stars at low…
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  11. The Pillars of Creation: Multiwavelength Explorations in 3D

    July 2, 2024 08:00 PM
    Lectures
    Speaker: Dr. Frank Summers (Space Telescope Science Institute) The Pillars of Creation in the Eagle Nebula is one of the most iconic images in astronomy. It was popularized by the Hubble Space Telescope's…
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  12. Exploring the Origins of Planetary Systems with JWST

    June 4, 2024 04:30 PM
    Lectures
    Speaker: Nicole Arulanantham (Space Telescope Science Institute) Newborn stars are surrounded by disks of gas and dust. Within these wide, thin disks, a system of planets can form. The…
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  13. Accounting for Spontaneous Charge Production in the EMCCD Gain Register

    May 16, 2024 04:00 PM
    Lectures
    An electron-multiplying charge-coupled device (EMCCD) is often used for taking images with space telescopes and other devices. Photons hit the pixels and photo-electrons are created, and these are multiplied…
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  14. Shedding Light on Dark Matter with Hubble

    May 7, 2024 08:00 PM
    Lectures
    Speaker: Eduardo Vitral (Space Telescope Science Institute) Dark matter plays an elusive role in the universe, especially in its gravitational influence within dwarf galaxies. Despite being invisible,…
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  15. Sustainability in Operations of Astronomical Research Facilities - NOIRLab's Strategy

    April 23, 2024 01:00 PM
    Colloquia
    I will give an overview of the NOIRLab Sustainability Program which is aimed at reducing the center's carbon footprint from electricity, travel and vehicles by 50% by the end of 2027. NOIRLab built…
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