Mars Articles

• Moon
  Solar System
  Pluto
  Space Missions
  NASA
  Jupiter
   
  

  Moon

  The Moon is Earth's only natural satellite. The average distance from the Earth to the Moon is 384,399 kilometres (238,854 mi), which is about 30 times the diameter of the Earth. At this distance, it ... > 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
• NASA
  Space Exploration
  Space Missions
  Astronomy
  Cosmology
  Astrophysics
   
  

  Carl Sagan

  Dr Carl Edward Sagan (November 9, 1934 - December 20, 1996) was an American astronomer, astrobiologist and highly successful science popularizer. He pioneered exobiology and promoted the Search for ... > more
• Extrasolar Planets
  Stars
  Solar System
  Astronomy
  Sun
  Mars
   
  

  Planetary habitability

  Planetary habitability is the measure of an astronomical body's potential to develop and sustain life. It is generally assumed that any extraterrestrial life that might exist will be based on the ... > more
• Geomagnetic Storms
  Sun
  Solar Flare
  Renewable Energy
  Energy and the Environment
  Wind Energy
   
  

  Solar wind

  A solar wind is a stream of charged particles (i.e., a plasma) which are ejected from the upper atmosphere of a star. When originating from stars other than the Earth's Sun, it is sometimes called a ... > more
• Sun
  Solar Flare
  Astronomy
  Solar System
  Moon
  Northern Lights
   
  

  Solar eclipse

  A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partially obscuring Earth's view of the Sun. This configuration can only occur during a New Moon, when the ... > more
• Saturn
  Solar System
  Pluto
  Astronomy
  Moon
  Space Exploration
   
  

  Titan (moon)

  Titan, or Saturn VI, is the largest moon of Saturn and the second largest moon in the solar system, after Jupiter's moon Ganymede. It is roughly 50% larger than Earth's moon by diameter, and is ... > more
• Kuiper Belt
  Pluto
  Eris (Xena)
  Solar System
  Astronomy
  Extrasolar Planets
   
  

  Eris (dwarf planet)

  Eris is the largest known dwarf planet in the solar system. It is a trans-Neptunian object (TNO), orbiting the Sun in a region of space known as the scattered disc, just beyond the Kuiper belt, and ... > more
• Solar Flare
  Sun
  Northern Lights
  Asteroids, Comets and Meteors
  Black Holes
  Satellites
   
  

  Magnetosphere

  A magnetosphere is the region around an astronomical object in which phenomena are dominated or organized by its magnetic field. Earth is surrounded by a magnetosphere, as are the magnetized planets ... > more
• Volcanoes
  Natural Disasters
  Sports Science
  Geology
  Global Warming
  Early Climate
   
  

  Volcano

  A volcano is an opening (or rupture) in the Earth's surface or crust, which allows hot, molten rock, ash, and gases to escape from deep below the surface. Volcanic activity involving the extrusion of ... > more

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