{"section":"missions","label":"Missions & Instruments","count":12,"generatedAt":"2026-03-20","items":[{"slug":"gaia-space-observatory","path":"/missions/gaia-space-observatory/","title":"Gaia Space Observatory & DR3 Astrometry","description":"How ESA's Gaia space astrometry mission mapped positions, trigonometric parallaxes, proper motions, and spectra for 1.8 billion Milky Way stars.","questionOrTopic":"How does ESA's Gaia Space Observatory map the three-dimensional structure and kinematics of the Milky Way?","epistemicStatus":"strong-observational-evidence","formula":"Δα*(t) = Δα*₀ + μ_α* (t − t₀) + ϖ P_α(t)  ;  Δδ(t) = Δδ₀ + μ_δ (t − t₀) + ϖ P_δ(t)","keyMetricsCount":4,"sources":["src:gaia-dr3","src:hipparcos-new"]},{"slug":"james-webb-space-telescope","path":"/missions/james-webb-space-telescope/","title":"James Webb Space Telescope (JWST)","description":"How NASA/ESA/CSA's 6.5-meter cryogenic infrared space observatory probes Cosmic Dawn galaxies at z > 14, star-forming clouds, and exoplanet atmospheres.","questionOrTopic":"How is the James Webb Space Telescope engineered to observe the early infrared universe and exoplanets?","epistemicStatus":"strong-observational-evidence","formula":"θ_diff = 1.22 λ / D ≈ 0.068″ at λ = 2.0 μm (D = 6.5 m)  ;  λ_obs = λ_rest (1 + z)","keyMetricsCount":4,"sources":["src:jwst-archive","src:shoes-2022","src:nasa-exoplanet-archive"]},{"slug":"hubble-space-telescope","path":"/missions/hubble-space-telescope/","title":"Hubble Space Telescope (HST)","description":"How NASA/ESA's 2.4-meter UV, optical, and near-infrared space observatory transformed deep-field cosmology, the distance ladder, and black hole science.","questionOrTopic":"How has the Hubble Space Telescope shaped modern astrophysics from low Earth orbit?","epistemicStatus":"strong-observational-evidence","formula":"θ_FWHM ≈ 1.03 λ / D = 0.044″ at λ = 500 nm (D = 2.4 m)","keyMetricsCount":4,"sources":["src:shoes-2022","src:harris-globulars","src:simbad-cds"]},{"slug":"planck-space-observatory","path":"/missions/planck-space-observatory/","title":"Planck Space Observatory & CMB Cosmology","description":"How ESA's Planck satellite mapped the Cosmic Microwave Background temperature and polarization across nine frequencies to anchor the six-parameter ΛCDM model.","questionOrTopic":"How did ESA's Planck Space Observatory measure the definitive Cosmic Microwave Background parameters?","epistemicStatus":"strong-observational-evidence","formula":"C_ℓ = (1 / (2ℓ + 1)) ∑_(m=−ℓ)^(+ℓ) |a_ℓm|²  ;  (ΔC_ℓ / C_ℓ)_CV = √[ 2 / ((2ℓ + 1) f_sky) ]","keyMetricsCount":4,"sources":["src:planck-2018"]},{"slug":"kepler-and-tess-transit-surveys","path":"/missions/kepler-and-tess-transit-surveys/","title":"Kepler & TESS Exoplanet Transit Surveys","description":"How NASA's Kepler and TESS space telescopes discovered thousands of transiting exoplanets and established the demographics of super-Earths and sub-Neptunes.","questionOrTopic":"How did the Kepler and TESS space missions revolutionize exoplanet demographics?","epistemicStatus":"strong-observational-evidence","formula":"SNR_transit = [ (R_p / R_★)² / σ_CDPP ] · √N_tr","keyMetricsCount":4,"sources":["src:nasa-exoplanet-archive"]},{"slug":"ligo-virgo-kagra-observatories","path":"/missions/ligo-virgo-kagra-observatories/","title":"LIGO, Virgo & KAGRA Gravitational-Wave Network","description":"How the international network of 3- and 4-kilometer laser interferometers detects merging black holes and neutron stars and triangulates their sky positions.","questionOrTopic":"How do the LIGO, Virgo, and KAGRA observatories work together as a global gravitational-wave network?","epistemicStatus":"strong-observational-evidence","formula":"Δt_(12) = (r₁ − r₂) · n̂ / c  ;  |Δt_LIGO| ≤ 10.0 ms  ,  |Δt_LIGO-Virgo| ≤ 27.2 ms","keyMetricsCount":4,"sources":["src:gwtc-3"]},{"slug":"event-horizon-telescope","path":"/missions/event-horizon-telescope/","title":"The Event Horizon Telescope (EHT) Array","description":"How a global array of millimeter/submillimeter radio observatories linked by atomic clocks imaged the event-horizon shadows of M87* and Sagittarius A*.","questionOrTopic":"How does the Event Horizon Telescope synthesize an Earth-sized virtual telescope to image black holes?","epistemicStatus":"strong-observational-evidence","formula":"θ_EHT ≈ λ / B_max ≈ 20 μas (at 230 GHz)  ;  d_shadow = 2√27 (GM / c² D)","keyMetricsCount":4,"sources":["src:eht-m87-sgra"]},{"slug":"chandra-x-ray-observatory","path":"/missions/chandra-x-ray-observatory/","title":"Chandra X-Ray Observatory","description":"How NASA's flagship X-ray telescope uses four nested iridium-coated grazing-incidence mirror pairs to achieve 0.5-arcsecond high-energy imaging.","questionOrTopic":"How does NASA's Chandra X-Ray Observatory achieve sub-arcsecond imaging of the high-energy universe?","epistemicStatus":"strong-observational-evidence","formula":"ε_X ∝ n_e² √T_X  ;  M_total(<r) = −(k_B T_X r / G μ m_p) [ d ln n_e / d ln r + d ln T_X / d ln r ]","keyMetricsCount":4,"sources":["src:simbad-cds"]},{"slug":"alma-submillimeter-array","path":"/missions/alma-submillimeter-array/","title":"ALMA: Atacama Submillimeter Array","description":"How 66 reconfigurable antennas at 5,050 meters on Chile's Chajnantor plateau image protoplanetary disks, cold molecular gas, and dusty high-redshift galaxies.","questionOrTopic":"How does the ALMA interferometer observe cold molecular gas and planet-forming disks?","epistemicStatus":"strong-observational-evidence","formula":"N_baselines = N(N − 1) / 2 = 2,145 (for N = 66)  ;  θ_res ≈ λ / B_max ≈ 0.005″ (at λ = 0.4 mm, B = 16 km)","keyMetricsCount":4,"sources":["src:simbad-cds","src:eht-m87-sgra"]},{"slug":"vera-c-rubin-observatory-lsst","path":"/missions/vera-c-rubin-observatory-lsst/","title":"Vera C. Rubin Observatory & LSST Survey","description":"How an 8.4-meter wide-field telescope and 3.2-gigapixel camera on Cerro Pachón image the entire southern sky every three nights for ten years.","questionOrTopic":"How will the Vera C. Rubin Observatory's Legacy Survey of Space and Time (LSST) transform time-domain astronomy?","epistemicStatus":"strong-observational-evidence","formula":"Etendue = A_eff · Ω_FOV ≈ (35 m²) × (9.6 deg²) = 319 m² deg²","keyMetricsCount":4,"sources":["src:simbad-cds","src:gcvs-v5"]},{"slug":"fermi-gamma-ray-space-telescope","path":"/missions/fermi-gamma-ray-space-telescope/","title":"Fermi Gamma-Ray Space Telescope","description":"How NASA's Fermi Large Area Telescope and Gamma-ray Burst Monitor survey the high-energy sky from 8 keV to >300 GeV every three hours.","questionOrTopic":"How does the Fermi Gamma-Ray Space Telescope detect GeV photons and gamma-ray bursts?","epistemicStatus":"strong-observational-evidence","formula":"γ + Z → Z + e⁻ + e⁺  ;  E_γ,min = 2 m_e c² = 1.022 MeV","keyMetricsCount":4,"sources":["src:gwtc-3","src:simbad-cds"]},{"slug":"euclid-and-roman-cosmology-missions","path":"/missions/euclid-and-roman-cosmology-missions/","title":"Euclid & Roman Space Cosmology Missions","description":"How ESA's Euclid and NASA's Nancy Grace Roman space telescopes map dark energy, cosmic shear, and microlensing exoplanets across wide fields.","questionOrTopic":"How do the Euclid and Nancy Grace Roman space missions test dark energy and map the dark universe?","epistemicStatus":"strong-observational-evidence","formula":"w(a) = w₀ + w_a (1 − a) = w₀ + w_a [ z / (1 + z) ]","keyMetricsCount":4,"sources":["src:planck-2018","src:nasa-exoplanet-archive"]}]}