Facts about the Hubble Space Telescope
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Between 1990 and 2023, maintenance missions replaced nearly every major component of the Hubble Space Telescope except its primary mirror, effectively transforming it into an entirely reconstructed instrument.
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Hubble's observations of Cepheid variable stars in the Andromeda Galaxy during 1994 enabled astronomers to precisely measure the distance to that galaxy at 2.5 million light-years.
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Hubble's Wide Field Camera 3, installed in 2009, can photograph objects in ultraviolet, visible, and near-infrared wavelengths simultaneously, enabling astronomers to study stellar populations across three distinct electromagnetic regions.
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Hubble's spectroscopic instruments have measured the expansion rate of the universe, revealing the existence of dark energy through observations of distant Type Ia supernovae in the late 1990s.
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Hubble's ultraviolet instruments discovered that intergalactic gas clouds contain heavy elements forged in stellar furnaces, fundamentally changing our understanding of cosmic chemical evolution.
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Scientists estimate Hubble has captured roughly 1.3 million images throughout its mission, generating approximately 150 gigabytes of raw data annually for astronomical research.
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The Hubble Space Telescope's Advanced Camera for Surveys can detect light from objects over 13.4 billion light-years away, observing galaxies as they existed merely 400 million years after the Big Bang.
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Hubble's infrared capabilities revealed that the universe contains roughly two trillion galaxies, a tenfold increase from the previously estimated two hundred billion galaxies.
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Operating continuously since 1990, the Hubble Space Telescope has consumed enough electrical power to equal the output of approximately 140 household light bulbs during its entire mission lifespan.
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Servicing missions by astronauts have extended the Hubble Space Telescope's operational life from an original twelve-year design to over three decades of continuous scientific observations.
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Hubble's primary mirror measures 2.4 meters in diameter and has already observed over 1.5 million celestial objects since its deployment in 1990.
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In 1995, Hubble captured the Deep Field image revealing approximately 3,000 galaxies in an area smaller than a grain of sand held at arm's length.
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A flawed mirror in the Hubble Space Telescope was corrected during a 1993 spacewalk, restoring its ability to focus light properly and revolutionizing modern astronomy.
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Launched in 1990, the Hubble Space Telescope orbits Earth every 97 minutes at approximately 17,500 kilometers per hour.