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The 93 pages that link to Hubble Space Telescope, each with the reason it gives.

• James Webb Space TelescopeCompared with: Hubble and Webb cover overlapping wavelengths but differ in mirror size, instruments, and scientific emphasis.

• Edwin HubbleRelated: Its name commemorates Hubble, while its observations have refined cosmic distance measurements.

• TelescopeBroader topic: Its sharp images helped establish the scale and evolution of the universe.

• Cepheid variableRelated: Its observations resolved Cepheids in distant galaxies, extending distance measurements beyond the Milky Way.

• Starburst galaxyRelated: Its sharp images helped distinguish compact star-forming regions from merger structures.

• Angular resolutionBroader topic: Its location above the atmosphere supports sharp images at optical wavelengths.

• Reflecting telescopeBroader topic: Its 2.4-meter primary mirror gathers light above Earth’s atmosphere.

• Exoplanet atmosphereRelated: Hubble enabled influential transit spectroscopy measurements of exoplanet atmospheres.

• Chandra X-ray ObservatoryCompared with: Hubble reveals cooler and differently obscured structures that can be compared with Chandra’s X-ray sources.

• Space telescopeBroader topic: Its long record shows how a general-purpose optical observatory serves many fields.

• Ultraviolet astronomyBroader topic: Its instruments have provided extensive ultraviolet observations across many astronomical fields.

• Galaxy redshift surveyCompared with: Its deep, narrow observations complement the wide-area mapping strategy of galaxy redshift surveys.

• Orion NebulaRelated: Its detailed images resolved disks, jets, and gas structures within the nebula.

• BetelgeuseRelated: Hubble images helped trace material ejected from Betelgeuse during its Great Dimming.

• Rayleigh criterionBroader topic: Its 2.4-meter mirror sets a wavelength-dependent diffraction resolution.

• Herbig–Haro objectRelated: Its sharp images resolved moving knots and changing structures in many Herbig–Haro systems.

• Space Shuttle programBroader topic: Shuttle astronauts deployed Hubble and conducted five servicing missions that extended its life.

• Direct imagingRelated: Its coronagraphic observations have imaged disks and faint companions near stars.

• Carina NebulaRelated: Hubble images have made the nebula's pillars and luminous clouds widely known.

• GaiaCompared with: Hubble targets detailed imaging and spectroscopy rather than Gaia’s all-sky precision astrometry.

• Newtonian telescopeCompared with: Its Cassegrain-style optical layout contrasts with the Newtonian’s side-mounted focal plane.

• Spitzer Space TelescopeCompared with: Hubble and Spitzer observed overlapping targets in different wavelength ranges.

• HD 209458 bRelated: Hubble observations measured sodium, hydrogen, and other atmospheric signatures here.

• Space explorationBroader topic: Hubble explores distant objects by collecting light rather than traveling to them.

• Eagle NebulaRelated: The telescope’s portrait of the nebula became one of its most widely circulated images.

• Great Red SpotRelated: Repeated Hubble images track the Spot’s shrinking size and changing color.

• Horsehead NebulaRelated: Its visible-light images made the Horsehead's silhouette widely recognizable.

• Magellanic StreamRelated: Its ultraviolet spectra have measured the Stream’s ions and elemental abundances.

• Omega CentauriRelated: Its sharp images resolve crowded regions and individual stars in the cluster.

• Ring NebulaRelated: Hubble images resolve the Ring Nebula's knots, arcs, and layered shell.

• SpacecraftBroader topic: Hubble shows how spacecraft can sustain major astronomical observatories above Earth's atmosphere.

• Whirlpool GalaxyRelated: Its images resolve star-forming regions and dust lanes across the Whirlpool’s disk.

• Brian SchmidtRelated: Hubble observations helped measure distant supernovae beyond the reach of many ground-based surveys.

• Large Binocular TelescopeCompared with: Hubble avoids atmospheric distortion in space, while the Large Binocular Telescope observes from the ground.

• Lyman SpitzerBroader topic: Spitzer's long campaign for a large space telescope helped lead to this observatory.

• Messier 87Related: Hubble captured visible-light images of M87’s jet and its bright knots.

• 47 TucanaeRelated: Hubble resolved crowded stars in 47 Tucanae and surveyed them for transiting planets.

• ArrokothRelated: Hubble observations helped identify Arrokoth as a suitable New Horizons flyby target.

• Cartwheel GalaxyRelated: Hubble images revealed the Cartwheel’s intricate rings and star-forming knots.

• Cat's Eye NebulaRelated: Its sharp images exposed the nebula's nested structures and small-scale details.

• Cygnus ARelated: Optical images show Cygnus A’s host galaxy and its disturbed central environment.

• Fermi Gamma-ray Space TelescopeCompared with: Hubble observes lower-energy light, providing a different view of sources detected by Fermi.

• International space cooperationRelated: Its partnership paired European instruments and contributions with NASA’s servicing missions.

• Magellanic BridgeRelated: Hubble measurements have constrained the ages and motions of young Bridge stars.

• Messier 51Related: Its images show the Whirlpool’s spiral arms, dust lanes, and star-forming regions in exceptional detail.

• Missing baryon problemBroader topic: Its ultraviolet spectra helped detect oxygen-bearing gas along distant sightlines.

• Primary mirrorBroader topic: Its fixed primary mirror shows how optical figure errors can affect a telescope’s images.

• Sombrero GalaxyRelated: Hubble images resolved the galaxy’s dust lane and stellar structure in exceptional detail.

• Space Telescope Science InstituteRelated: The institute plans Hubble observations, supports its science operations, and distributes its data.

• 4 VestaRelated: Hubble’s images revealed Vesta’s shape and south-polar basins before Dawn arrived.