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Astronomical Terms

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33 facts:

Absolute Spacetime
   is described as   
View of Space Emerging from Special Relativity
Absolute Zero
   is described as   
The Temperature at Which All Molecular Activity Ceases
Minus 273 degrees C or zero kelvin
   is described as   
Perspective Holding That Space is Absolute
Arrow of Time
   is described as   
Direction in Which Time Seems to Point
From past to future
   is described as   
A Small Rocky Object Orbiting the Sun
Usually in the astroid belt between Mars and Jupiter
Big Bang
   is described as   
The Theoretical Origin of the Universe
Some 13.5 billion years ago when all matter was thrust outward from a single point
Big Crunch
   is described as   
One Possible End to the Universe
The reverse of the big bang in which the universe collapses on itself
Binary Star
   is described as   
A Pair of Stars Orbiting a Mutual Center of Gravity
Black Hole
   is described as   
An Object With an Immense Gravitational Pull
So strong that not even light can escape
Closed Strings
   is described as   
Filaments of Energy in the String Theory
In the shape of loops
   is described as   
Nebulous Objects of Ice and Dust That Orbit the Sun
Generally in highly eccentric orbits
   is described as   
The Sun's Outer Atmosphere
Cosmic Horizon
   is described as   
The Most Distant Point in Space
Beyond which light has not had enough time to reach us since the Big Bang
Dark Matter
   is described as   
Galactic Matter That Neither Emits nor Reflects Light
Makes up the bulk of the matter in the known universe
Eliptical Plane
   is described as   
Path of Planetary Orbit
Extra Solar Planet
   is described as   
A Discovered and Confirmed Planet Beyond the Solar System
Gas Giants
   is described as   
The Four Outer Planets of Our Solar System
Jupiter, Saturn, Uranus and Neptune
Gegenschein Glow
   is described as   
Diametrically Opposite the Sun
Astroidal dust particles reflect light to earth
Globular Cluster
   is described as   
Mini-galaxies Associated With but Separate from Larger Galaxies
Aggregations of some hundred of thousands of stars
Hubble's Law
   is described as   
Tenet That Says That the Farther Away a Galaxy, the Faster It Moves Away
Milky Way
   is described as   
Our Local Galaxy
100,000 light-years in diameter; believed to revolve around a gigantic black hole
Neutron Star
   is described as   
The Collapsed Remnant of a Supernova
Open Star Cluster
   is described as   
Physically Related Groups of Stars Held Together by Mutual Gravitational Attraction
Eg. Pleiades. Called open to distinguish this kind of cluster from a globular cluster
Proxima Centauri
   is described as   
Our Nearest Solar Neighbor
4.3 light-years away
   is described as   
Rotating Neutron Star
Emits a beam of radio waves
   is described as   
Elementary Particles Subject to the Strong Nuclear Force
Six varieties: up, down, strange, charm, top, bottom
   is described as   
Visual Equivalent of the Doppler Effect
A shifting of spectral lines toward the red end; due to the expansion of the universe
   is described as   
Stellar Explosion
May briefly outshine its entire host galaxy until fading from view in weeks or months
Unified Theory
   is described as   
Theory That Describes All Matter and All Forces in a Single Theoretical Structure
   is described as   
The State of Lowest Energy
The emptiest that a region can be
Vela Pulsar
   is described as   
Dates from a Supernova 10,000 Years Ago
White Dwarf
   is described as   
A Class of Star Smaller but More Dense Than Our Sun
Nuclear fuel has almost been exhausted except for the outermost layer
   is described as   
Subatomic Particle That Travels Freely Thru Matter
Acronym for Weakly Interacting Massive Particle; may be a component of dark matter wind

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