Satellite Articles

• Space Telescopes
  NASA
  Space Exploration
  Cosmic Rays
  Black Holes
  Astronomy
   
  

  Compton Gamma Ray Observatory

  The Compton Gamma Ray Observatory (CGRO) was the second of the NASA "Great Observatories" to be launched to space, following the Hubble Space Telescope. The observatory was launched on the Space ... > 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
• Asteroids, Comets and Meteors
  Solar System
  Astronomy
  Pluto
  Kuiper Belt
  Extrasolar Planets
   
  

  Asteroid

  Asteroids, also called minor planets or planetoids, are a class of astronomical object. The term asteroid is generally used to indicate a diverse group of small celestial bodies that drift in the ... > more
• Cosmic Rays
  Black Holes
  Space Telescopes
  NASA
  Space Exploration
  Astronomy
   
  

  Gamma ray burst

  Gamma-ray bursts are the most luminous physical phenomena in the universe known to the field of astronomy. They consist of flashes of gamma rays that last from seconds to hours, the longer ones being ... > more
• Albert Einstein
  Black Holes
  Physics
  Quantum Physics
  Sports Science
  Asteroids, Comets and Meteors
   
  

  Gravitation

  Gravity is a force of attraction that acts between bodies that have mass. Gravity is the reason for the very existence of the earth, the sun and other celestial bodies; without it matter would not ... > more
• Pluto
  Kuiper Belt
  Extrasolar Planets
  Solar System
  Eris (Xena)
  Astronomy
   
  

  Definition of planet

  The definition of "planet" has for some time been the subject of intense debate. Although the word dates back thousands of years, no officially decreed scientific definition of "planet" existed ... > 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
• Astrophysics
  Astronomy
  Black Holes
  Space Telescopes
  Stars
  Galaxies
   
  

  Astrophysics

  Astrophysics is the branch of astronomy that deals with the physics of the universe, including the physical properties (luminosity, density, temperature and chemical composition) of astronomical ... > more
• Galaxies
  Stars
  Eris (Xena)
  Astronomy
  Astrophysics
  Kuiper Belt
   
  

  Local Group

  The Local Group (also called M31 group or the Andromeda group) is the group of galaxies that includes our galaxy, the Milky Way. The group comprises over 30 galaxies, with its gravitational center ... > 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

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