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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YAE In-Person Family STEM Forum
March 14, 2024 05:00 PMCommunity EventsPlease join us in-person to learn more about astronomy during our Youth for Astronomy and Engineering Program event "Family STEM Forum" followed by an opportunity to engage in hands-on activities…View Webcast -
ULLYSES: Continuing the Voyage of Discovery
March 11 through 14, 2024 12:00 AMWorkshopsThe observational phase of the HST Ultraviolet Legacy Library of Young Stars as Essential Standards (ULLYSES) program initiated by the STScl Director in 2019 was completed in 2023. ULLYSES provides a legacy…View Webcast -
The Prevalence and Origin of the Alpha-Bimodality in the Local Group
March 6, 2024 03:00 PMColloquiaThe recent era of large, ground-based abundance surveys has unraveled the chemical structures of our Milky Way galaxy. The most striking abundance feature is the alpha-abundance bimodality. The low-alpha…View Webcast -
The Milky Way Laboratory
February 28, 2024 03:00 PMColloquiaGalaxy centers are the hubs of activity that drive galaxy evolution, from supermassive black holes to feedback from dense stellar clusters. While the bulk of our Milky Way Galaxy is a prime example of…View Webcast -
Habitability and Biosignature Preservation in Magnesium Sulfate Brines: Lessons from the “Spotted” Lakes
February 23, 2024 12:00 PMLecturesObservations of Mars have revealed the widespread presence of paleo-evaporitic deposits, in the form of magnesium sulfate salts. MgSO4 salts have been known to preserve evidence of life on geological…View Webcast -
The New Directly Imaged Planets and Their Substellar Analogs
February 21, 2024 03:00 PMColloquiaDirectly imaged planets are a peculiar population of self-luminous, massive, and young giant exoplanets and brown dwarf companions. JWST has now expanded this population to lower mass, colder, older, long-period…View Webcast -
Astronomy Re-envisioned: Investigating the Physics of Galaxy Evolution with Machine Learning
February 15, 2024 04:00 PMLecturesAstronomical imaging of galaxies reveals how they formed and evolved. While spectroscopy is necessary for measuring galaxies' physical properties, such as their cold gas content or metallicity, it…View Webcast -
CTU-GSP (CTU's Ground Sphere Project): Innovation of a Low-Cost Ground Station for University Use
February 13, 2024 10:00 AMColloquiaThis multi-semester engineering project focuses on researching, designing, developing, and innovating a low budget ground station for use by Capitol Technology University (CTU) students. The project began…View Webcast -
A Tapestry of Gravity: LISA and the Future of Gravitational Wave Astronomy
February 6, 2024 08:00 PMLecturesSpeaker: Shane L. Larson (Northwestern University) Nearly everything we know about the universe has been discovered using photons - light in all its myriad forms. However, using advanced technology…View Webcast -
How Earth’s Early Oceans and Atmosphere Help Guide the Search for Life Beyond Our Solar System
February 2, 2024 12:00 PMLecturesLife and life-sustaining environments, including oceans, have existed on a dynamic Earth for more than four billion years despite the multitude of challenges that come with stellar, solar system, and planetary…View Webcast -
Simulation of High-contrast Polarimetric Observations of Debris Disks with the Roman Coronagraph Instrument
January 18, 2024 04:00 PMLecturesThe Nancy Grace Roman Space Telescope Coronagraph Instrument will enable the polarimetric imaging of debris disks and inner dust belts in the optical and near-infrared wavelengths, in addition to the high-contrast…View Webcast -
How to be a Scientist in a World on Fire: Rethinking Academia in a Time of Climate Crisis
January 16, 2024 10:00 AMColloquiaTo address the climate and ecological crisis, we need radical and urgent action at all levels of society. Universities are ideally positioned to lead these societal transformations, yet are largely failing…View Webcast -
The Enigmatic World of Brown Dwarfs: Failed Stars or Errant Planets?
January 9, 2024 08:00 PMLecturesSpeaker: Elena Manjavacas (Space Telescope Science Institute) During their formation, brown dwarfs did not manage to accrue enough mass to ignite hydrogen fusion, and hence, they are not stars. In…View Webcast -
On Galaxies Circumgalactic Media and Outflows
December 6, 2023 03:00 PMColloquiaThe gas reservoir around galaxies plays a fundamental, while still poorly understood, role in regulating the growth of galaxies, in establishing the scaling relation we observe among galaxies' physical…View Webcast -
Celebrating NASA’s 40-Year Legacy of Infrared Astronomy from Space
December 5, 2023 08:00 PMLecturesSpeakers: Robert Hurt (Caltech/IPAC) Since July 2022, the world has been amazed by the incredible fidelity of the Webb Space Telescope's infrared view of the universe. Yet 2023 also marks anniversaries…View Webcast
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