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🪐Intro to Astronomy
Key Terms

1583 essential vocabulary terms and definitions to know for your Intro to Astronomy exam

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F = G \frac{m_1 m_2}{r^2}
M_{BH}- ext{sigma} Relation
21 cm Hydrogen Line
21-cm radio line
2dF Galaxy Redshift Survey
3C 273
3C 48
51 Pegasi b
61 Cygni

A

A ring
A-type Star
A-type stars
Abell 1689
Abell 2218
Abell 370
Absolute Magnitude
Absorption Line Spectra
Absorption Lines
Accretional Heating
ACE
Acidophiles
Action at a Distance
Active galaxies
Active Optics
Active region
Adams
Adams Ring
Adaptive optics
Adaptive Optics
Aeolian Erosion
Aeolian Processes
Age-Metallicity Relation
Air Cherenkov Telescope
Air Mass
Air Showers
Alan Guth
Albedo
Albert Einstein
Alfred Wegener
Allan Hills
Allan Hills 84001
Allen Telescope Array
Alpha Centauri
Alpha Decay
Alpha Particles
Alps
Altazimuth Mount
Amino Acids
Amino acids
Ammonium Hydrosulfide
Amphidromic Point
Ancient Greek Astronomers
Andes
Andes Mountains
Andromeda Galaxy
Andromeda galaxy
Andromeda Nebula
Andromeda-Milky Way Collision
Angular Diameter
Angular momentum
Angular Momentum
Angular Momentum Conservation
Angular Power Spectrum
Angular Resolution
Anions
Annular Solar Eclipse
Antennae Galaxies
Anthropogenic Greenhouse Effect
Anticyclonic Storm
Antony Hewish
Aperture Synthesis
Aphrodite Terra
Apogee
Apogee
Apollo Missions