Galaxy Articles

• Space Station
  Space Exploration
  NASA
  Space Probes
  Astronomy
  Space Missions
   
  

  Space elevator

  A space elevator is a theoretical structure designed to transport material from a planet's surface into space. Many different types of space elevators have been proposed. They all share the goal of ... > more
• Solar Flare
  Sun
  Astronomy
  Northern Lights
  Astrophysics
  Cosmic Rays
   
  

  Corona

  In astronomy, a corona is the luminous plasma "atmosphere" of the Sun or other celestial body, extending millions of kilometres into space, most easily seen during a total solar eclipse, but also ... > more
• Solar Flare
  Sun
  Northern Lights
  Solar System
  Astronomy
  Cosmic Rays
   
  

  Solar flare

  A solar flare is a violent explosion in the Sun's atmosphere with an energy equivalent to tens of millions of hydrogen bombs. Solar flares take place in the solar corona and chromosphere, heating ... > more
• Solar System
  Saturn
  Moon
  Pluto
  Jupiter
  Astronomy
   
  

  Saturn's natural satellites

  Saturn is currently known to have 56 moons, many of which were discovered very recently, and 3 additional un-confirmed, hypothetical moons. However, a precise number of moons can never be given, as ... > more
• Sports Science
  Ancient Civilizations
  Fossils
  Solar Flare
  Technology
  Sun
   
  

  Antikythera mechanism

  The Antikythera mechanism is an ancient mechanical analog computer (as opposed to digital computer) designed to calculate astronomical positions. It was discovered in the Antikythera wreck off the ... > more
• Mars
  NASA
  Space Missions
  Solar System
  Space Exploration
  Astronomy
   
  

  Mars

  Mars is the fourth planet from the Sun in our solar system. It is named after Mars, the Roman god of war. Mars has also earned the nickname "The Red Planet" due to the reddish appearance it has when ... > more
• Space Station
  Space Probes
  Space Exploration
  NASA
  Astronomy
  Space Telescopes
   
  

  Outer space

  Outer space, also simply called space, refers to the relatively empty regions of the universe outside the atmospheres of celestial bodies. Outer space is used to distinguish it from airspace (and ... > more
• Black Holes
  Cosmology
  Astronomy
  Satellites
  Space Exploration
  Asteroids, Comets and Meteors
   
  

  Introduction to general relativity

  General relativity (GR) is the geometrical theory of gravitation published by Albert Einstein in 1916. It unifies Einstein's earlier special relativity with Sir Isaac Newton's law of universal ... > more
• Physics
  Quantum Physics
  Quantum Computing
  Spintronics
  Black Holes
  Graphene
   
  

  Quantum number

  A quantum number describes the energies of electrons in atoms. Each quantum number specifies the value of a conserved quantity in the dynamics of the quantum system. Since any quantum system can have ... > more
• Saturn
  Solar System
  Astronomy
  Space Exploration
  Space Probes
  Moon
   
  

  Saturn

  Saturn is the sixth planet from the Sun. It is a gas giant, the second-largest planet in the solar system after Jupiter. Saturn has a prominent system of rings, consisting of mostly ice particles ... > more

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