Introduction to the Hubble Space Telescope

The Hubble Space Telescope (HST) is a space-based great observatory that observes at ultraviolet through near-infrared wavelengths. High resolution imaging and wide-ranging spectroscopic capabilities enable forefront research across all domains of astrophysics. Time on HST is awarded through an open peer-reviewed competition.


Hubble's launch in 1990 sped humanity to one of its greatest advances in that journey. Hubble is a telescope that orbits Earth. Its position above the atmosphere gives it a view of the universe that typically far surpasses that of ground-based telescopes.

In the years since launch, HST continues its role at the forefront of astronomy, ranging from our own Solar System to the high-redshift universe.

Through the middle of the next decade, HST will remain the only space-based telescope providing spectroscopy and high-resolution imaging at UV, optical, and near-infrared wavelengths. With the launch of the James Webb Space Telescope in 2021, the bold science questions pursued with HST will be bolstered by the complementary capabilities of the two observatories.

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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  • Exploring the Origins of Planetary Systems with JWST

    Public Lecture Series promotional banner
    4 Jun 2024

    Speaker: Nicole Arulanantham (Space Telescope Science Institute) Newborn stars are surrounded by disks of gas and dust. Within these wide, thin disks, a system of planets...

  • 2024 HotSci at JHU/STScI

    2024 HotSci at JHU/STScI
    5 Jun 2024

    Featuring Tiger Hsiao (JHU) on A Comprehensive Study of the lensed galaxy MACS0647−JD at z=10.17 with JWST, Alec Hirschauer (STScI) on Star Formation at Low Metallicity:...

  • JWST at the 244th American Astronomical Society Meeting

    JWST at the 244th American Astronomical Society Meeting
    9-13 Jun 2024

    The 244th American Astronomical Society (AAS) meeting will include a variety of events focused on science with JWST as we get ready to wrap up Cycle 2,  prepare for Cycle...


HST Help Desk 

Please contact the HST Help Desk with any questions.