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ULLYSES: Hubble’s Ultraviolet Survey of Young Stars

Graphic titled “ULLYSES: Hubble’s Ultraviolet Survey of Young Stars” shows the Hubble Space Telescope at the center. Beneath the telescope is a thin rainbow that takes the shape of a rectangle, beginning with purple and ending in red. Three text areas appear near Hubble. Beneath them are three boxes with large numbers.

NASA’s Hubble Space Telescope surveyed actively forming and recently formed stars in ultraviolet light over three years. The result is ULLYSES, the Ultraviolet Legacy Library of Young Stars as Essential Standards, an unmatched set of information known as spectra that will help researchers pin down how young stars form and shape their nearby environments.

How many stars did Hubble observe? And what might the data tell us? Explore this graphic to learn how Hubble’s ultraviolet data may shape what researchers learn about young stars.

Learn more about the ULLYSES program.

  • Release Date
    December 11, 2023
  • Credit
    Illustration: NASA, ESA, Elizabeth Wheatley (STScI)

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Last Updated
Jun 05, 2025
Contact
Media

Claire Andreoli
NASA’s Goddard Space Flight Center
Greenbelt, Maryland
claire.andreoli@nasa.gov

Illustration Credit

NASA, ESA, Elizabeth Wheatley (STScI)

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