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Webb Draws Back the Curtains on An Undiscovered Universe (Interview with Tommaso Treu)

This video features an interview with Tommaso Treu, principal investigator of the GLASS-JWST Early Release Science Program (Grism Lens-Amplified Survey from Space). This program recently obtained an image of the galaxy cluster Abell 2744, also known as Pandora's Cluster. In it, about 6,000 galaxies can be detected within a region of sky no larger than a grain of sand held at arm's length. Initial analysis suggests that an unusual number of galaxies in the early universe were much brighter than expected.

  • Release Date
    November 17, 2022
  • Science Release
    NASA’s Webb Draws Back Curtain on Universe’s Early Galaxies
    Read the release
  • Credit
    Video: Danielle Kirshenblat (STScI); Music: Soundstripe Productions; Science: Tommaso Treu (UCLA)

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Related Images & Videos

Graphic titled “Abell 2744 GLASS JWST/NIRCam” with two large images showing thousands of galaxies of different colors, shapes, and sizes, and two smaller pull-outs showing details in the large images.

Abell 2744 GLASS (NIRCam Image)

Two of the farthest galaxies seen to date are captured in these Webb Space Telescope pictures of the outer regions of the giant galaxy cluster Abell 2744. The galaxies are not inside the cluster, but many billions of light-years farther behind it. The galaxy labeled (1) existed...

Graphic titled “James Webb Space Telescope: Pandora’s Cluster, Abell 2744,” with compass arrows, scale bar, and color key for reference.

Abell 2744 GLASS (NIRCam Compass Image)

Images of Pandora’s Cluster, Abell 2744, captured by Webb’s Near-Infrared Camera (NIRCam), with compass arrows, scale bar, and color key for reference. The north and east compass arrows show the orientation of the image on the sky. Note that the relationship between north and...

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Details

Last Updated
Nov 18, 2025
Contact
Media

Laura Betz
NASA’s Goddard Space Flight Center
Greenbelt, Maryland
laura.e.betz@nasa.gov

Video Credit

Danielle Kirshenblat (STScI)

Music Credit

Soundstripe Productions

Science Credit

Tommaso Treu (UCLA)

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