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Introduction to the Hubble Space Telescope

The Hubble Space Telescope (HST) is a space-based observatory orbiting Earth. Hubble observes the universe in multiple wavelengths of light, from ultraviolet to visible to near-infrared.


The Hubble Space Telescope’s launch in 1990 marked the beginning of a new era in humanity’s exploration of the universe. From above Earth’s obscuring atmosphere, Hubble can obtain extremely high-resolution images and detailed spectroscopic data of the cosmos, from our solar system to the distant, early universe. Scientists submit proposals to use Hubble through an open, peer-reviewed, anonymous competition.

Through the middle of the next decade, HST will remain the only space-based telescope providing spectroscopy and high-resolution imaging at ultraviolet, visible, and near-infrared wavelengths. Since the James Webb Space Telescope launched in 2021, the two observatories have been working in tandem to push astronomy forward and pursue the boldest scientific questions of our time.

part of HST's Legacy ExtraGalactic UV Survey (LEGUS)
NGC 3627, part of the Hubble Space Telescope's Legacy ExtraGalactic UV Survey (LEGUS), the sharpest, most comprehensive ultraviolet-light survey of star-forming galaxies in the nearby universe. The images are a blend of ultraviolet light and visible light from Hubble's Wide Field Camera 3 and Advanced Camera for Surveys.

HST For the Public

Using the Hubble Telescope

Observatory News


Press Releases

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Upcoming STScI Events

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  • YAE In-Person Family STEM Forum

    YAE In-Person Family STEM Forum
    18 Jul 2024

    Please join us in-person to learn more about astronomy during our Youth for Astronomy and Engineering Program event "STEM Forum" followed by an opportunity to engage in hands-on...

  • 2024 HotSci at JHU/STScI: Science Toolbox and Professional Development

    2024 HotSci at JHU/STScI: Science Toolbox and Professional Development
    24 Jul 2024

    "Science Toolbox and Professional Development" featuring Nicolas Flagey (STScI) on What could/should the astronomy community do make this planet more sustainable? and Molly...

  • Webb Office Hours

    Promotional image for Webb Office Hours
    25 Jul 2024

    The JWST User Community is invited to call into Webb Office Hours to ask questions and directly interact with a team of STScI JWST experts via WebEx. We welcome questions about the...


HST Help Desk 

Please contact the HST Help Desk with any questions.