Here are a few facts about astronomy followed by a long list of links to as much information as you can handle on the topic.
Ancient astronomy was more of a branch of philosophy than real science. Astronomers had no way to directly observe any celestial bodies in detail, so had to make best guesses and then convince everyone else that they were right.
Before Copernicus came on the scene, astronomers believed that the Earth was the center of the Universe, the Sun and the ‘four’ planets orbited around it in a series of complex movements.
Did you know that despite the advent of space telescopes and launching many space probes, we have only observed a minor fraction of the known Universe? That doesn’t even take into account the Universe that we have no knowledge of at this time.
In the links below you will find a great deal of information about astronomy: some of the terminology used, images, and different discoveries made in the field. Hopefully, what you read will inspire you to delve even more deeply into the vastness of space.
- Apogee
- Elliptical Orbit
- Orbit
- Plane of the Ecliptic
- Albedo
- Luminosity
- Parallax
- Ephemeris
- Red Shift
- Azimuth
- Sidereal Time
- Aphelion
- Perihelion
- Cherenkov Radiation
- Armillary Sphere
- Absolute Magnitude
- Ancient Astronomy
- Ecliptic
- Astrolabe
- Light Pollution
- Greenwich Mean Time
- Infrared Spectroscopy
- Orrery
- GRB
- Apeiron
- Apparent Magnitude
- Astro Physics
- Astronomical Clock
- Armillary
- Armillary Sundial
- Retrograde
- Retrograde Motion
- Asterisms
- Borealis
- Celestial Globe
- Stellar Parallax
- Celestial Body
- Conjunction
- Analemma
- Astrophysics
- History of Astronomy
- Nucleosynthesis
- Cosmological Constant
- What is Astronomy?
- Roche Limit
- Barycenter
- Ephemerides
- Eccentricity
- Copernican
- Cosmologist
- Lagrange Points
- What is Dark Matter?
- Epicycles
- Dark Matter
- Astrometry
- Accretion
- Kepler’s Laws of Planetary Motion
- What is an Orbit?
- Transit
- What is Parallax?
- American Astronomical Society
- Blue Shift
- Orbital Period
- Penumbra
- Brightness
- Celestial Navigation
- Celestial Sphere
- Dark Energy
- Motion Parallax
- Apparent Motion
- Apsis
- Astrochemistry
- Celestial Mechanics
- Circumpolar
- Dark Adaptation
- Declination
- Fraunhofer Lines
- Greenwich Time
- H-Alpha
- Horizon
- Hubble Constant
- Interstellar Cloud
- L-1
- L-2
- Opposition
- Perihelion and Aphelion
- Ptolemy Astronomy
- Right Ascension
- Semi Major Axis
- Sidereal Day
- Sloan Digital Sky Survey
- Syzygy
- Zodiacal Light
- Chromatic Aberration
- Transiting
- Astronomical Units
- Eclipse
- Astronomy Image Gallery
- Amateur Astronomy
- Scintillation

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