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A field says which part of the subject an essay sits in and a series follows one idea in depth. This is the third axis: the named objects themselves, and every essay that touches each one.
There are 3177 named objects here, and 1445 of them are named by more than one essay. Those have a page of their own. The rest link straight to the single essay that names them — a page whose whole content is one card would say nothing the essay itself does not.
- 21-centimetre line 1 essay
- A background eclipsing binary 1 essay
- A deep-space manoeuvre 2 essays
- A nuisance parameter 2 essays
- A post-fit residual 3 essays
- A pulsar timing array 4 essays
- A trajectory-correction manoeuvre 4 essays
- A type Ia supernova 4 essays
- Aberration 10 essays
- Abiotic oxygen 1 essay
- Absolute magnitude 8 essays
- Absorption line 3 essays
- Abundance 4 essays
- Abundance analysis 1 essay
- Abundance degeneracy 2 essays
- Abundance gradient 1 essay
- Abundance matching 1 essay
- Abundance problem 1 essay
- Accelerating expansion 2 essays
- Accommodation coefficient 1 essay
- Accretion 11 essays
- Accretion column 1 essay
- Accretion disc 14 essays
- Accretion rate 5 essays
- Acoustic cavity 2 essays
- Acoustic peaks 3 essays
- Acoustic scale 4 essays
- Action–angle variables 1 essay
- Active debris removal 3 essays
- Active galactic nucleus 1 essay
- Active region 1 essay
- Activity indicator 1 essay
- Activity saturation 1 essay
- Adaptive optics 8 essays
- Adaptive step 1 essay
- Adiabatic contraction 3 essays
- Adiabatic cooling 1 essay
- Adiabatic expansion 1 essay
- Adiabatic gradient 1 essay
- Adiabatic index 2 essays
- Adiabatic invariant 22 essays
- Adiabatic response 1 essay
- Admittance 2 essays
- Aerobraking 2 essays
- Aerocapture 2 essays
- Aerodynamic heating 1 essay
- Aerosol 1 essay
- Age metallicity relation 1 essay
- Age of the universe 2 essays
- Age velocity relation 1 essay
- AGN feedback 2 essays
- Aim point 1 essay
- Air shower 1 essay
- Airglow 1 essay
- Airmass 4 essays
- Albedo 7 essays
- Alcock paczynski 3 essays
- Alcock paczynski test 2 essays
- Alfven radius 5 essays
- Alfven speed 3 essays
- Alfven wave 1 essay
- Algol paradox 1 essay
- Alias 1 essay
- Aliasing 1 essay
- All-sky photometry 1 essay
- Allan deviation 3 essays
- Allen eggers 1 essay
- Along-track acceleration 1 essay
- Along-track drift 1 essay
- Along-track error 2 essays
- Alpha enhancement 2 essays
- Alpha knee 2 essays
- Alpha viscosity 1 essay
- Ambipolar diffusion 4 essays
- An occultation chord 1 essay
- Analemma 7 essays
- Andrade rheology 2 essays
- Anelasticity 1 essay
- Angle of repose 1 essay
- Angles only navigation 1 essay
- Angular accuracy 1 essay
- Angular diameter 12 essays
- Angular differential imaging 2 essays
- Angular einstein radius 4 essays
- Angular measurement 1 essay
- Angular momentum 55 essays
- Angular momentum deficit 3 essays
- Angular momentum problem 1 essay
- Angular momentum transport 14 essays
- Angular power spectrum 2 essays
- Angular resolution 4 essays
- Angular scale 1 essay
- Angular semi-major axis 1 essay
- Angular separation 1 essay
- Angular-diameter distance 8 essays
- Anisoplanatism 3 essays
- Anisotropic clustering 2 essays
- Anisotropic emission 1 essay
- Anisotropic sampling 1 essay
- Anisotropic stress 1 essay
- Anisotropy 3 essays
- Anomalistic month 2 essays
- Anomaly 6 essays
- Antenna gain 1 essay
- Antenna pattern 1 essay
- Anthropic bound 1 essay
- Antimatter 1 essay
- Ap stars 1 essay
- Aperture photometry 3 essays
- Aperture synthesis 2 essays
- Apex 1 essay
- Apoapsis 4 essays
- Apparent altitude 1 essay
- Apparent magnitude 3 essays
- Apparent orbit 1 essay
- Apparent place 1 essay
- Apparent solar time 1 essay
- Approach ellipse 1 essay
- Approximation error 1 essay
- Apsidal angle 1 essay
- Apsidal constant 1 essay
- Apsidal motion 3 essays
- Apsidal motion constant 1 essay
- Apsidal precession 14 essays
- Arc length 1 essay
- Archival data 1 essay
- Area-to-mass ratio 2 essays
- Argument of latitude 4 essays
- Argument of periapsis 3 essays
- Argument of periastron 3 essays
- Argument of perigee 1 essay
- Argument of perihelion 1 essay
- Arnetts rule 1 essay
- Ascending node 7 essays
- Asphericity 1 essay
- Asteroid 1 essay
- Asteroid belt 3 essays
- Asteroid family 7 essays
- Asteroid mass 1 essay
- Asteroid pair 1 essay
- Asteroid spin 1 essay
- Asteroseismology 16 essays
- Astration 1 essay
- Astrodust 1 essay
- Astrometric microlensing 1 essay
- Astrometric orbit 1 essay
- Astrometric place 1 essay
- Astrometric prediction 3 essays
- Astrometric reference 2 essays
- Astrometric solution 1 essay
- Astrometry 19 essays
- Astronomical twilight 4 essays
- Astronomical unit (AU) 9 essays
- Astrophysical false-positive 1 essay
- Asymmetric drift 1 essay
- Asymmetry parameter 1 essay
- Asymptotic giant branch 4 essays
- Atmospheric coherence time 1 essay
- Atmospheric composition 1 essay
- Atmospheric dispersion 2 essays
- Atmospheric drag 5 essays
- Atmospheric ducting 1 essay
- Atmospheric entry 2 essays
- Atmospheric escape 10 essays
- Atmospheric extinction 3 essays
- Atmospheric oblateness 1 essay
- Atmospheric refraction 6 essays
- Atmospheric retrieval 1 essay
- Atmospheric turbulence 4 essays
- Atomic clock 2 essays
- Atomic oxygen 1 essay
- Attenuation law 1 essay
- Attitude control 6 essays
- Aurora 1 essay
- Auroral oval 2 essays
- Autonomous navigation 1 essay
- Averaging kernel 1 essay
- Axial precession 5 essays
- Axial tilt 4 essays
- Axisymmetric field 1 essay
- Azimuth 1 essay
- B stars 1 essay
- B-modes 3 essays
- Baade wesselink method 1 essay
- Babcock leighton dynamo 1 essay
- Background limited 2 essays
- Background sources 1 essay
- Bahcall wolf cusp 1 essay
- Bailys beads 1 essay
- Ballistic capture 2 essays
- Ballistic coefficient 10 essays
- Balmer break 1 essay
- Balmer series 1 essay
- Bandpass 1 essay
- Bandwidth stretch 1 essay
- Bar instability 1 essay
- Barkers equation 1 essay
- Barycentre 10 essays
- Barycentric coordinate time 2 essays
- Barycentric correction 2 essays
- Barycentric dynamical time (TDB) 1 essay
- Baryon 2 essays
- Baryon acoustic oscillations 7 essays
- Baryon clumping 1 essay
- Baryon density 6 essays
- Baryon fraction 4 essays
- Baryon loading 1 essay
- Baryon-to-photon ratio 7 essays
- Baryonic feedback 1 essay
- Baseline 4 essays
- Bayes factor 2 essays
- Bayesian inference 1 essay
- Beam chromaticity 1 essay
- Beam smearing 1 essay
- Beaming 2 essays
- Beat frequency 1 essay
- Benchmark star 2 essays
- Bertrands theorem 1 essay
- Bessel functions 1 essay
- Best approximation 1 essay
- Beta decay 1 essay
- Beta meteoroid 1 essay
- Beta model 2 essays
- Bi stability jump 1 essay
- Bi-elliptic transfer 1 essay
- Biermann battery 1 essay
- Bifurcation 2 essays
- Big bang nucleosynthesis 8 essays
- Big crunch 1 essay
- Big rip 1 essay
- Bimodality 1 essay
- Binary asteroid 2 essays
- Binary black hole 1 essay
- Binary fraction 3 essays
- Binary heating 7 essays
- Binary lens 2 essays
- Binary period distribution 1 essay
- Binary pulsar 5 essays
- Binary star 3 essays
- Binary stars 8 essays
- Binding energy 8 essays
- Binomial statistics 2 essays
- Birefringence 1 essay
- Birth cluster 1 essay
- Birth period 1 essay
- Bispectrum 1 essay
- Bisymmetric field 1 essay
- Black hole 12 essays
- Black hole entropy 1 essay
- Black hole growth 1 essay
- Black hole mass 3 essays
- Black hole spin 7 essays
- Blackbody 11 essays
- Blackbody spectrum 1 essay
- Blazar 7 essays
- Blend 1 essay
- Blending 1 essay
- Blowout size 1 essay
- Blue cloud 1 essay
- Blue edge 1 essay
- Blue straggler 1 essay
- Blunt body 1 essay
- Bolometric correction 2 essays
- Bolometric flux 2 essays
- Boltzmann distribution 1 essay
- Bond albedo 1 essay
- Bond energy 1 essay
- Bondi accretion 1 essay
- Bonnor ebert sphere 1 essay
- Bookkeeping 1 essay
- Boost 2 essays
- Bootstrap 1 essay
- Bouguer line 1 essay
- Bound bound absorption 1 essay
- Bound system 2 essays
- Bound-free absorption 2 essays
- Bow shock 1 essay
- Box least squares 2 essays
- Braking index 3 essays
- Breakup model 3 essays
- Bremsstrahlung 5 essays
- Bright ring 1 essay
- Brightness temperature 6 essays
- Broad-band photometry 1 essay
- Broad-line region 4 essays
- Broken-plane manoeuvre 2 essays
- Brouwers law 1 essay
- Brown dwarf 6 essays
- Bulge 1 essay
- Bulk composition 1 essay
- Bulk density 5 essays
- Bulk flow 3 essays
- Buoyancy frequency 2 essays
- Burstiness 1 essay
- Butterfly diagram 1 essay
- Calendar 1 essay
- Calendar drift 1 essay
- Calibration 5 essays
- Calibration factor 1 essay
- Calibrator 1 essay
- Caloric half-year 2 essays
- Cantorus 2 essays
- Capture 1 essay
- Capture orbit 1 essay
- Capture probability 1 essay
- Carbon burning 1 essay
- Carbon cycle 1 essay
- Carbon-to-oxygen ratio 1 essay
- Carbonaceous chondrite 2 essays
- Carbonate silicate cycle 2 essays
- Cassini state 4 essays
- Cassinis laws 1 essay
- Cataclysmic variable 1 essay
- Catalogue 2 essays
- Catastrophic breakup 1 essay
- Catastrophic disruption 2 essays
- Catastrophic outlier 1 essay
- Catastrophic outliers 1 essay
- Causal contact 3 essays
- Causality limit 1 essay
- Caustic 5 essays
- Celestial coordinates 1 essay
- Celestial intermediate origin 1 essay
- Celestial sphere 9 essays
- Central condensation 5 essays
- Central force 4 essays
- Central limit theorem 1 essay
- Central temperature 2 essays
- Centre of mass 2 essays
- Centrifugal barrier 3 essays
- Centrifugal force 1 essay
- Centroid 2 essays
- Centroid shift 1 essay
- Cepheid 1 essay
- Cepheid variable 5 essays
- Chandler wobble 2 essays
- Chandrasekhar limit 6 essays
- Change of variable 1 essay
- Chaos 10 essays
- Chaotic diffusion 3 essays
- Chaotic obliquity 2 essays
- Chappuis band 1 essay
- Characteristic age 3 essays
- Characteristic energy 8 essays
- Characteristic luminosity 2 essays
- Characteristic strain 1 essay
- Charge exchange 2 essays
- Charge to mass ratio 1 essay
- Charged current 2 essays
- Chemical evolution 6 essays
- Chirikov criterion 1 essay
- Chirp mass 6 essays
- Chopping 1 essay
- Chopping signal 3 essays
- Chord tunnel 1 essay
- Choreography 2 essays
- Chorus waves 1 essay
- Chromosphere 4 essays
- Chronology function 3 essays
- Chronometer 1 essay
- Circular inference 1 essay
- Circular orbit 1 essay
- Circular polarisation 1 essay
- Circular restricted problem 1 essay
- Circular velocity 5 essays
- Circularisation 2 essays
- Circumbinary planet 1 essay
- Circumgalactic medium 2 essays
- Circumpolar 3 essays
- Circumpolar star 1 essay
- Climate model 2 essays
- Climate sensitivity 1 essay
- Climate stability 1 essay
- Climatic precession 1 essay
- Clock angle 1 essay
- Clock bias 2 essays
- Clock ensemble 3 essays
- Clock offset 1 essay
- Clock rate 1 essay
- Clone orbits 1 essay
- Close encounter 5 essays
- Close wide degeneracy 2 essays
- Closed box model 1 essay
- Closed orbit 1 essay
- Closed universe 2 essays
- Closure amplitude 1 essay
- Closure phase 5 essays
- Cloud deck 1 essay
- Clouds 1 essay
- Clumping factor 1 essay
- Cluster age 2 essays
- Cluster dissolution 1 essay
- Cluster mass function 5 essays
- Cluster turnoff 3 essays
- CMB dipole 3 essays
- CNO cycle 5 essays
- Co-orbital 2 essays
- Coalescence 1 essay
- Coeval population 1 essay
- Coherence length 4 essays
- Coherence time 1 essay
- Coherent transponder 1 essay
- Cohesion 3 essays
- Coincidence problem 3 essays
- Cold dark matter 3 essays
- Cold neutral medium 2 essays
- Collapsar 1 essay
- Collapsed fraction 1 essay
- Collinear points 1 essay
- Collision avoidance 1 essay
- Collision cross-section 1 essay
- Collision induced absorption 1 essay
- Collision probability 1 essay
- Collision rate 1 essay
- Collision singularity 1 essay
- Collision timescale 1 essay
- Collision velocity 1 essay
- Collisional age 1 essay
- Collisional cascade 7 essays
- Collisional excitation 2 essays
- Collisional family 1 essay
- Collisional lifetime 1 essay
- Collisionless system 3 essays
- Colour excess 2 essays
- Colour index 11 essays
- Colour magnitude diagram 5 essays
- Colour term 3 essays
- Column density 1 essay
- Comet 3 essays
- Comet families 1 essay
- Comet nucleus 2 essays
- Commensurability 2 essays
- Common envelope 2 essays
- Common mode noise 1 essay
- Comoving coordinates 1 essay
- Comoving distance 9 essays
- Comoving hubble radius 1 essay
- Comoving separation 1 essay
- Compact binary 4 essays
- Compact galaxy 1 essay
- Compact planetary systems 1 essay
- Compactness 3 essays
- Comparison star 1 essay
- Compensated summation 1 essay
- Completeness 7 essays
- Complex love number 1 essay
- Composition 1 essay
- Compression 1 essay
- Compton parameter 1 essay
- Compton y parameter 4 essays
- Computus 2 essays
- Condensation sequence 4 essays
- Condition number 1 essay
- Conditioning 7 essays
- Cone effect 2 essays
- Conformal time 5 essays
- Confusion limit 3 essays
- Confusion noise 1 essay
- Conic section 1 essay
- Conic sections 6 essays
- Conjunction 1 essay
- Conjunction analysis 1 essay
- Conjunction assessment 3 essays
- Conservation law 1 essay
- Conservation laws 1 essay
- Conservation of momentum 1 essay
- Conserved quantity 3 essays
- Consistency relation 1 essay
- Contact binary 1 essay
- Contact timing 1 essay
- Contamination 2 essays
- Continued fraction 5 essays
- Continuous coverage 1 essay
- Continuous opacity 1 essay
- Continuous viewing zone 2 essays
- Continuously habitable zone 1 essay
- Continuum 1 essay
- Continuum fitting 2 essays
- Continuum normalisation 2 essays
- Continuum placement 1 essay
- Continuum variability 1 essay
- Contrast 2 essays
- Contrast curve 2 essays
- Contribution function 1 essay
- Convection 16 essays
- Convection zone 2 essays
- Convective blueshift 5 essays
- Convective envelope 12 essays
- Convective overshoot 1 essay
- Convective turnover time 2 essays
- Convergence 6 essays
- Convergent 1 essay
- Convergent migration 2 essays
- Convexity 1 essay
- Convolution 4 essays
- Cool-core 1 essay
- Cooling age 6 essays
- Cooling break 2 essays
- Cooling flow 2 essays
- Cooling function 1 essay
- Cooling time 2 essays
- Coordinate singularity 1 essay
- Coordinate time 1 essay
- Coordinated Universal Time 1 essay
- Copernican system 1 essay
- Coplanarity 1 essay
- Core accretion 4 essays
- Core collapse 10 essays
- Core collapse supernova 1 essay
- Core envelope coupling 1 essay
- Core formation 1 essay
- Core helium burning 1 essay
- Core mantle boundary 3 essays
- Core mantle friction 1 essay
- Core mass 3 essays
- Core mass fraction 5 essays
- Core scouring 1 essay
- Core temperature 1 essay
- Core-powered mass loss 3 essays
- Core–mantle coupling 1 essay
- Coreshine 1 essay
- Corona 2 essays
- Coronagraph 4 essays
- Corotating interaction region 1 essay
- Corotation 5 essays
- Corotation radius 2 essays
- Corotation resonance 1 essay
- Corotation torque 1 essay
- Corrected target iteration 2 essays
- Correlated error 1 essay
- Correlated noise 2 essays
- Correlation 1 essay
- Correlation function 9 essays
- Cosmic acceleration 2 essays
- Cosmic dawn 2 essays
- Cosmic infrared background 2 essays
- Cosmic inventory 2 essays
- Cosmic microwave background 5 essays
- Cosmic neutrino background 1 essay
- Cosmic rays 10 essays
- Cosmic shear 6 essays
- Cosmic shoreline 1 essay
- Cosmic star formation history 1 essay
- Cosmic variance 7 essays
- Cosmic void 4 essays
- Cosmic web 1 essay
- Cosmic-ray exposure age 1 essay
- Cosmic-ray ionisation 1 essay
- Cosmogenic isotope 2 essays
- Cosmological constant 12 essays
- Cosmological dimming 3 essays
- Cosmological distances 1 essay
- Cosmological principle 3 essays
- Cosmological redshift 3 essays
- Coulomb coupling 1 essay
- Coulomb logarithm 9 essays
- Counts in spheres 1 essay
- Covariance 4 essays
- Coverage 2 essays
- Covering radius 1 essay
- Cramer rao bound 1 essay
- Crank angle 2 essays
- Crater chronology 1 essay
- Crater counting 6 essays
- Crater saturation 1 essay
- Cratering rate 1 essay
- Crescent visibility 1 essay
- Critical curve 3 essays
- Critical density 8 essays
- Critical inclination 5 essays
- Critical latitude 1 essay
- Critical point 1 essay
- Critical rotation 4 essays
- Critical spin period 1 essay
- Critical surface density 3 essays
- Cross filter photometry 1 essay
- Cross-correlation 3 essays
- Cross-correlation function 1 essay
- Cross-section 6 essays
- Crossing time 3 essays
- Crosstalk 1 essay
- Crust 1 essay
- Crystallisation 4 essays
- Curvaton 1 essay
- Curve of growth 4 essays
- Cusp core problem 2 essays
- Cycler orbit 1 essay
- Cycloid 1 essay
- Cyclostratigraphy 2 essays
- Cyclotron resonance 1 essay
- Dalemberts rule 1 essay
- Damped random walk 2 essays
- Damping tail 4 essays
- Damping wings 4 essays
- Danjon limit 1 essay
- Danjon scale 1 essay
- Dark energy 9 essays
- Dark energy density 1 essay
- Dark halo 1 essay
- Dark matter 21 essays
- Dark matter annihilation 1 essay
- Dark matter halo 21 essays
- Dark radiation 1 essay
- Dark subhalo 2 essays
- Darwin radau 1 essay
- Data assimilation 1 essay
- Datum 1 essay
- Davis chandrasekhar fermi 2 essays
- Day length 2 essays
- Day night asymmetry 1 essay
- Day night contrast 1 essay
- Daylight saving time 1 essay
- De sitter space 4 essays
- De vaucouleurs law 1 essay
- Dead zone 4 essays
- Death line 1 essay
- Debris disc 5 essays
- Debye cooling 2 essays
- Deceleration 1 essay
- Deceleration parameter 5 essays
- Declination 11 essays
- Deconvolution 2 essays
- Deep-space network 3 essays
- Definitional uncertainty 1 essay
- Deflection angle 1 essay
- Deformable mirror 1 essay
- Degeneracy 46 essays
- Degeneracy direction 3 essays
- Degeneracy pressure 13 essays
- Degenerate ellipse 1 essay
- Degree variance 1 essay
- Degrees of freedom 1 essay
- Delay time distribution 1 essay
- Delivery ellipse 1 essay
- Delta resonance 1 essay
- Delta v budget 1 essay
- Delta-DOR 2 essays
- Democratic triple 1 essay
- Dense core 3 essays
- Density parameter 4 essays
- Density perturbation 1 essay
- Density wave 5 essays
- Departure asymptote 2 essays
- Departure energy 2 essays
- Depletion time 4 essays
- Depolarisation 5 essays
- Depression angle 2 essays
- Detached binary 1 essay
- Detailed balance 1 essay
- Detection bias 1 essay
- Detection efficiency 1 essay
- Detection limit 5 essays
- Detection threshold 9 essays
- Detector response 1 essay
- Detector sensitivity curve 1 essay
- Detector threshold 2 essays
- Deterministic chaos 1 essay
- Deuterium 1 essay
- Deuterium abundance 5 essays
- Deuterium bottleneck 2 essays
- Dichotomy 1 essay
- Differential analysis 1 essay
- Differential colour refraction 1 essay
- Differential correction 5 essays
- Differential drag 2 essays
- Differential measurement 2 essays
- Differential photometry 4 essays
- Differential refraction 1 essay
- Differential rotation 7 essays
- Differentiation 1 essay
- Diffraction 3 essays
- Diffraction limit 7 essays
- Diffusion 3 essays
- Diffusion coefficient 1 essay
- Diffusion length 3 essays
- Diffusive shock acceleration 1 essay
- Dilute core 1 essay
- Dilution 4 essays
- Dilution of precision 2 essays
- Dimensional analysis 3 essays
- Dipole 1 essay
- Dipole field 2 essays
- Dipole moment 1 essay
- Direct detection 1 essay
- Direct imaging 5 essays
- Dirty beam 1 essay
- Disc evolution 3 essays
- Disc halo decomposition 1 essay
- Disc heating 2 essays
- Disc migration 3 essays
- Disc scale length 1 essay
- Disc shocking 2 essays
- Disc truncation 2 essays
- Disc wind 4 essays
- Dispersion 1 essay
- Dispersion measure 3 essays
- Dispersion relation 1 essay
- Displacement field 1 essay
- Disposal manoeuvre 1 essay
- Disruption rate 1 essay
- Disruption threshold 1 essay
- Dissociation equilibrium 1 essay
- Distance ambiguity 1 essay
- Distance determination 1 essay
- Distance duality 3 essays
- Distance estimation 1 essay
- Distance indicator 3 essays
- Distance ladder 9 essays
- Distance modulus 5 essays
- Distance scale 1 essay
- Disturbing function 4 essays
- Dithering 1 essay
- Diurnal signature 1 essay
- Diurnal tides 1 essay
- Divergence 1 essay
- Dobson unit 1 essay
- Dohnanyi slope 1 essay
- Doppler boosting 1 essay
- Doppler broadening 2 essays
- Doppler effect 3 essays
- Doppler imaging 1 essay
- Doppler shift 6 essays
- Doppler tomography 1 essay
- Doppler tracking 3 essays
- Doppler width 1 essay
- Double degenerate 1 essay
- Draconic month 1 essay
- Drag coefficient 2 essays
- Drag epoch 1 essay
- Drag loss 1 essay
- Drag-free control 1 essay
- Dredge up 1 essay
- Drift loss cone 1 essay
- Drift rate 1 essay
- Drift shell 5 essays
- Dry merger 2 essays
- Dst index 1 essay
- Dual beam polarimetry 1 essay
- Dual-frequency 1 essay
- Ducting 1 essay
- Dungey cycle 2 essays
- Dust 1 essay
- Dust correction 1 essay
- Dust dynamics 1 essay
- Dust grains 1 essay
- Dust polarisation 4 essays
- Dust temperature 1 essay
- Dust to gas ratio 1 essay
- Dwarf galaxy 5 essays
- Dwarf sensitive features 1 essay
- Dwarf spheroidal 4 essays
- Dynamic pressure 2 essays
- Dynamical ellipticity 7 essays
- Dynamical formation 1 essay
- Dynamical friction 14 essays
- Dynamical instability 2 essays
- Dynamical mass 8 essays
- Dynamical spacing 1 essay
- Dynamical stability 1 essay
- Dynamical tide 3 essays
- Dynamical time 1 essay
- Dynamical timescale 1 essay
- Dynamo 5 essays
- E mode polarisation 2 essays
- E-folding time 1 essay
- E-folds 6 essays
- E-modes 1 essay
- Early dark energy 2 essays
- Early universe 1 essay
- Earth moon system 2 essays
- Earth orientation 1 essay
- Earth orientation parameters 1 essay
- Earth rotation angle 1 essay
- Earth shadow 3 essays
- Earth twin 1 essay
- Earths shadow 4 essays
- Eccentric anomaly 3 essays
- Eccentric dipole 1 essay
- Eccentricity 54 essays
- Eccentricity damping 4 essays
- Eccentricity vector 2 essays
- Ecclesiastical moon 1 essay
- Eclipse 2 essays
- Eclipse contact 1 essay
- Eclipse geometry 1 essay
- Eclipse timing 2 essays
- Eclipsing binary 12 essays
- Ecliptic 8 essays
- Ecliptic coordinates 2 essays
- Eddington barbier 4 essays
- Eddington barbier relation 1 essay
- Eddington bias 4 essays
- Eddington limit 19 essays
- Eddington ratio 3 essays
- Effective flux 1 essay
- Effective gravity 1 essay
- Effective number of neutrino species 1 essay
- Effective number of species 2 essays
- Effective optical depth 1 essay
- Effective potential 11 essays
- Effective radius 1 essay
- Effective spin 2 essays
- Effective stellar flux 1 essay
- Effective temperature 19 essays
- Effective wavelength 1 essay
- Effective yield 2 essays
- Eigenfrequency 1 essay
- Eigenmode 1 essay
- Einstein radius 8 essays
- Einstein static universe 1 essay
- Ejecta 1 essay
- Ejection velocity 2 essays
- Elastic thickness 1 essay
- Electric propulsion 8 essays
- Electromagnetic counterpart 1 essay
- Electron capture 1 essay
- Electron degeneracy 3 essays
- Electron density 2 essays
- Electron donor 1 essay
- Electron energy distribution 1 essay
- Electron pressure 3 essays
- Electron scattering 5 essays
- Electron temperature 1 essay
- Element set 1 essay
- Elevation cutoff 1 essay
- Elevation mask 4 essays
- Ellipsoid 1 essay
- Elliptical galaxy 4 essays
- Ellipticity 2 essays
- Elongation 2 essays
- Emission line 1 essay
- Emission measure 1 essay
- Emission spectrum 2 essays
- Emissivity index 1 essay
- Empirical model 2 essays
- Enceladus 1 essay
- Enclosed mass 6 essays
- Encounter navigation 1 essay
- End of life 2 essays
- Energy balance 1 essay
- Energy budget 1 essay
- Energy cascade 1 essay
- Energy diffusion 2 essays
- Energy drift 3 essays
- Energy loss length 1 essay
- Energy loss time 1 essay
- Energy scale 1 essay
- Energy scale of inflation 1 essay
- Energy spectrum 1 essay
- Energy transport 1 essay
- Energy-limited escape 11 essays
- Ensemble 2 essays
- Entrainment 1 essay
- Entropy 2 essays
- Entropy per baryon 1 essay
- Entry corridor 3 essays
- Envelope fraction 2 essays
- Epact 2 essays
- Ephemeris 13 essays
- Ephemeris time 2 essays
- Epicycle 1 essay
- Epicyclic frequency 4 essays
- Epicyclic overdensity 2 essays
- Epoch 8 essays
- Equation of centre 3 essays
- Equation of state 19 essays
- Equation of the centre 1 essay
- Equation of the equinoxes 1 essay
- Equation of time 11 essays
- Equilibrium point 1 essay
- Equilibrium temperature 7 essays
- Equilibrium tide 6 essays
- Equinoctial elements 1 essay
- Equinox 15 essays
- Equipartition 8 essays
- Equipotential 3 essays
- Equivalence principle 2 essays
- Equivalent width 6 essays
- Ergodic hypothesis 1 essay
- Error budget 1 essay
- Error propagation 7 essays
- Escape 1 essay
- Escape energy 1 essay
- Escape fraction 1 essay
- Escape velocity 20 essays
- Eta earth 3 essays
- Eulerian period 1 essay
- Evanescent zone 1 essay
- Evaporation 2 essays
- Evection 1 essay
- Event horizon 9 essays
- Event rate 1 essay
- Evolutionary track 3 essays
- Exact degeneracy 1 essay
- Excess surface density 2 essays
- Excitation 2 essays
- Excitation balance 1 essay
- Exhaust velocity 6 essays
- Exobase 1 essay
- Exomoon 1 essay
- Exosphere 2 essays
- Exospheric temperature 1 essay
- Exozodiacal dust 2 essays
- Expansion history 2 essays
- Expansion of space 3 essays
- Exponential atmosphere 1 essay
- Exponential disc 7 essays
- Exposure age 1 essay
- Exposure time 1 essay
- External convergence 1 essay
- External pressure 1 essay
- Extinction 5 essays
- Extinction curve 1 essay
- Extinction efficiency 1 essay
- Extragalactic background light 8 essays
- Extrapolation 4 essays
- Extreme-ultraviolet 4 essays
- Facula 2 essays
- Fading problem 1 essay
- Faint end slope 3 essays
- Faint limit 1 essay
- Faint young sun 3 essays
- Fall relation 1 essay
- Fallback rate 1 essay
- False-alarm 1 essay
- False-alarm probability 4 essays
- False-positive 7 essays
- False-positive probability 1 essay
- Far-infrared background 1 essay
- Faraday rotation 4 essays
- Fast and slow rotators 1 essay
- Fast radio burst 1 essay
- Fata morgana 1 essay
- Feedback 6 essays
- Feeding zone 1 essay
- Fermat-potential 1 essay
- Fermi acceleration 1 essay
- Fictitious time 1 essay
- Fiducial cosmology 1 essay
- Field criterion 1 essay
- Field of regard 1 essay
- Field reversal 1 essay
- Fifth force 1 essay
- Figure of merit 2 essays
- Figure-eight orbit 1 essay
- Filling factor 1 essay
- Final parsec problem 1 essay
- Fine-structure cooling 1 essay
- Fingers of God 2 essays
- Finite age 1 essay
- Finite-burn 2 essays
- Finite-source effect 4 essays
- First ionisation potential 1 essay
- First stars 1 essay
- Fisher information 1 essay
- Fit interval 1 essay
- Fitting error 1 essay
- Flat field 2 essays
- Flatness 1 essay
- Flatness problem 1 essay
- Flavour 2 essays
- Flexure 1 essay
- Flight time 1 essay
- Flight-path angle 2 essays
- Floating-point 1 essay
- Fluorescence 1 essay
- Flux calibration 1 essay
- Flux cancellation 1 essay
- Flux freezing 10 essays
- Flux problem 1 essay
- Flux ratio 1 essay
- Flux tube 1 essay
- Flux weighting 1 essay
- Flux-limited sample 1 essay
- Flux-transport 1 essay
- Flyby 1 essay
- Flyby altitude 1 essay
- Flyby sequence 1 essay
- Flyby targeting 1 essay
- Focus 5 essays
- Fold crossing 2 essays
- Footprint 2 essays
- Forbidden line 1 essay
- Force multiplier 1 essay
- Forced eccentricity 7 essays
- Forced libration 2 essays
- Forcing frequency 1 essay
- Forecast horizon 1 essay
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