Space Probe Articles

• Extrasolar Planets
  Satellites
  Kuiper Belt
  Pluto
  Asteroids, Comets and Meteors
  Galaxies
   

  Equatorial bulge

  An equatorial bulge is a planetological term which describes a bulge which a planet may have around its equator, distorting it into an oblate spheroid. Because of a planet's equatorial bulge, its ... > 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
• Asteroids, Comets and Meteors
  Solar System
  NASA
  Astronomy
  Pluto
  Moon
   
  

  Near-Earth object

  Near-Earth objects (NEO) are asteroids, comets and large meteoroids whose orbit intersects Earth's orbit and which may therefore pose a collision danger. Due to their size and proximity, NEOs are ... > more
• Venus
  Solar System
  Sun
  Astronomy
  Solar Flare
  Extrasolar Planets
   
  

  Transit of Venus

  A transit of Venus across the Sun takes place when the planet Venus passes directly between the Sun and Earth, becoming visible against (and hence obscuring a small portion of) the solar disk. During ... > more
• Stars
  Eris (Xena)
  Galaxies
  Astronomy
  Astrophysics
  Extrasolar Planets
   
  

  Brown dwarf

  Brown dwarfs were originally called black dwarfs, a classification for dark substellar objects floating freely in space which were too low in mass to sustain stable hydrogen ... > more
• Sun
  Solar Flare
  Northern Lights
  Astronomy
  Solar System
  Extrasolar Planets
   
  

  Sunspot

  A sunspot is a region on the Sun's surface (photosphere) that is marked by a lower temperature than its surroundings and intense magnetic activity, which inhibits convection, forming areas of low ... > more
• Astronomy
  Solar System
  Extrasolar Planets
  Mars
  Sun
  Nebulae
   
  

  Johannes Kepler

  Johannes Kepler (December 27, 1571 - November 15, 1630), a key figure in the scientific revolution, was a German Lutheran mathematician, astrologer, and astronomer. Kepler lived in an era when there ... > 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
• 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
• Cosmology
  Big Bang
  Astrophysics
  Galaxies
  Astronomy
  Satellites
   
  

  Shape of the Universe

  The shape of the Universe is a subject of investigation within physical cosmology. Cosmologists and astronomers describe the geometry of the Universe which includes both local geometry and global ... > more

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