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Browse all Astrophysics I Key Terms

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Évariste Galois
21-cm line
21-cm line observations

A

Abiogenesis
Absolute magnitude
Absorption
Absorption lines
Absorption spectrum
Absorptivity
Accretion
Accretion disk
Accretion Flow
Acoustic oscillations
Acoustic Peaks
Active galactic nuclei
Active Galactic Nucleus
Active Mirrors
Adaptive Optics
Adaptive Time-Stepping
AGN feedback
Albedo
Albert Einstein
Algol
ALMA
AMS-02
Andromeda
Angular Momentum
Angular momentum conservation
Angular momentum transfer
Angular scale
Angular Size
Anita
Antares
Aperture
Arthur Eddington
Artificial Satellites
Asteroid belt
Astrolabe
Astrometric Methods
Astronomia Nova
Astronomical Unit
Astropy
Asymmetric drift
Asymptotic Giant Branch
Atmospheric composition
Atmospheric distortion reduction
Atmospheric escape
Atomic Hydrogen (H I)
Atomic Structure
Axions

B

Babylonian Astronomical Diaries
Background subtraction
Barred spiral
Barred Spiral Theory
Baryon Acoustic Oscillations
Baryon density
Baryon-to-photon ratio
Baryonic Matter
Beer-Lambert Law
Beta cephei stars
Betelgeuse
Big bang
Big Bang Theory
Big crunch
Big Freeze
Big rip
Binary star systems
Binding Energy
Biosignatures
Black hole
Black hole formation
Black hole imaging
Black hole mass scaling relation
Black hole-galaxy co-evolution
Black holes