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The 84 pages that link to James Webb Space Telescope, each with the reason it gives.

• AstrobiologyRelated: Its observations can characterize exoplanet atmospheres for potential biosignatures.

• Galaxy evolutionRelated: Its measurements test models of how quickly the first galaxies assembled.

• Habitable zoneRelated: Its atmospheric observations can test whether habitable-zone planets retain suitable conditions.

• BiosignatureRelated: Its observations can measure atmospheric molecules in some exoplanets.

• Exoplanet atmosphereRelated: Its sensitivity and wavelength coverage have expanded molecular studies of exoplanet atmospheres.

• ProtostarRelated: Its infrared instruments probe dusty star-forming regions and protostellar environments.

• ReionizationRelated: Its observations of distant galaxies test whether known early sources can supply enough ionizing photons.

• Orion NebulaRelated: Infrared observations reveal embedded young stars and dusty regions obscured in visible light.

• Direct imaging of exoplanetsRelated: Its infrared instruments can directly image selected planets and analyze their atmospheric light.

• IoRelated: Infrared observations can track Io’s volcanic heat and changing eruptions from afar.

• Population III starRelated: Its deep infrared observations can test indirect signatures of primordial stellar populations.

• Restricted three-body problemRelated: The restricted problem helps explain the orbit and station-keeping environment near L2.

• Trans-Neptunian objectRelated: Infrared observations can reveal surface compositions and temperatures of distant icy bodies.

• Cosmic star-formation historyRelated: Its observations probe faint galaxies at epochs that test the early history.

• TRAPPIST-1Related: Its observations probe the planets’ atmospheres, including searches for gases and clouds.

• Cosmic infrared backgroundRelated: Its deep observations investigate distant dusty galaxies that contribute to the background.

• Direct imagingRelated: Its coronagraphs enable infrared observations of planets and disks near bright stars.

• Carina NebulaRelated: Webb's infrared view can probe dusty regions and young stars in the nebula.

• Parabolic reflectorRelated: Its segmented primary mirror uses parabolic segments to approximate a large collecting surface.

• Cassiopeia ARelated: Its infrared views reveal fine structure in Cassiopeia A’s ejecta and surrounding dust.

• Eagle NebulaRelated: Its infrared views reveal stars and structures obscured in visible-light images.

• Horsehead NebulaRelated: Its infrared view probes dust and structures hidden in optical images.

• Proxima Centauri bRelated: Infrared observations can constrain the atmosphere of Proxima Centauri b, though stellar activity complicates detection.

• Ring NebulaRelated: Its infrared observations reveal dusty structures and molecular features within the Ring Nebula.

• TESSRelated: TESS discoveries around bright stars provide targets for Webb’s atmospheric observations.

• Tip of the red giant branchRelated: Its infrared imaging can resolve red giant stars in more distant galaxies.

• Whirlpool GalaxyRelated: Its infrared view reveals dust and star-forming structures that visible-light images obscure.

• ExomoonRelated: Its sensitivity may help characterize atmospheres of unusually large, warm exomoons.

• 47 TucanaeRelated: Its infrared observations can probe faint, cool stars in the cluster’s crowded regions.

• Adam RiessRelated: Its observations have been used to check whether crowded-field measurements affect local distance estimates.

• Cartwheel GalaxyRelated: Webb’s infrared observations reveal dust and star formation across the Cartwheel’s rings.

• International space cooperationRelated: Its instruments and launch arrangements demonstrate cooperation beyond crewed exploration.

• Space Telescope Science InstituteRelated: The institute helps run Webb’s science operations and administers its observing programs.

• Abell 1689Related: Infrared observations can characterize faint sources magnified behind the cluster.

• Astronomical objectRelated: Its infrared observations probe objects obscured or distant from visible-light telescopes.

• Messier 83Related: Infrared observations can probe dust-obscured star formation in Messier 83.

• Pillars of CreationRelated: Its infrared view reveals stars and structures hidden by dust in the pillars.

• FomalhautRelated: Webb observations have examined Fomalhaut’s warm dust and candidate planet-forming structures.

• Hubble Deep FieldRelated: Its infrared observations extend deep-field studies toward earlier galaxies than Hubble could readily detect.

• WISE 0855−0714Related: Its infrared instruments can probe the spectrum and atmosphere of this cold object.

• Epsilon EridaniRelated: Infrared observations can characterize faint dust and search for companions in the system.

• John C. MatherRelated: Mather served as its senior project scientist after his work on COBE.

• Messier 77Related: Infrared imaging has revealed dusty structures around Messier 77’s active nucleus.

• Rho Ophiuchi cloud complexRelated: Its infrared instruments can resolve embedded stars and dusty structures in the region.

• 2 PallasRelated: Infrared observations can help constrain Pallas’s surface composition without a spacecraft visit.

• Diffraction-limited systemRelated: Its large segmented mirror sets diffraction-limited angular resolution across its infrared observing range.

• Dumbbell NebulaRelated: Infrared observations can reveal cooler material in and around the Dumbbell Nebula.

• Interstellar iceRelated: Its infrared sensitivity measures ice features in obscured star-forming regions.

• Moons of HaumeaRelated: Infrared observations can investigate the satellites’ surfaces and thermal properties.

• NGC 6302Related: Its infrared instruments can examine dusty structures in NGC 6302.