There 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 the history and content of our Universe. In this talk I will present the recent results from DES that combines the final, six-year dataset and what we have learned in this 10-year journey. I will also give an outlook to the field in terms of galaxy imaging surveys with the starting of the Rubin Observatory Legacy Survey of Space and Time, as well as the Roman Space Telescope High Latitude Imaging Survey.

Speaker: Chihway Chang (The University of Chicago)

The 2026 Spring Colloquium talks are held on Wednesdays at 3:00 PM. This colloquium is hosted by STScI and will be held as an in-person and virtual event.

You may join in person at STScI’s John N. Bahcall Auditorium or virtually on the STScI Research YouTube channel.

Please direct questions or comments to contact above. The 2026 Spring Colloquium members are: Nimisha Kumari (STScI), Elena Manjavacas (STScI), Jack Neustadt (JHU), Kevin Schlaufman (JHU), Adam Smercina (STScI), Ethan Vishniac (JHU).