Kuiper Belt Articles

• Earth Science
  Geology
  Geomagnetic Storms
  Near-Earth Object Impacts
  Stars
  Asteroids, Comets and Meteors
   
  

  Precession of the equinoxes

  The precession of the equinoxes refers to the precession of Earth's axis of rotation with respect to inertial space. The precession of the equinoxes is caused by the differential gravitational forces ... > more
• Nuclear Energy
  Physics
  Astrophysics
  Weapons Technology
  Energy Technology
  Solar Energy
   
  

  Nuclear fusion

  In physics, nuclear fusion is the process by which multiple nuclei join together to form a heavier nucleus. It is accompanied by the release or absorption of energy depending on the masses of the ... > 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
• 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
• Black Holes
  Astronomy
  Astrophysics
  Space Telescopes
  Galaxies
  Space Exploration
   
  

  Quasar

  A quasar is an astronomical source of electromagnetic energy, including light, which shows a very high redshift. The scientific consensus is that this high redshift is the result of Hubble's law. ... > more
• Cosmology
  Astrophysics
  Physics
  Quantum Physics
  Big Bang
  Albert Einstein
   
  

  Physical cosmology

  Physical cosmology, as a branch of astrophysics, is the study of the large-scale structure of the universe and is concerned with fundamental questions about its formation and evolution. Cosmology ... > more
• Cosmology
  Cosmic Rays
  Astrophysics
  Big Bang
  Astronomy
  Black Holes
   
  

  Cosmic microwave background radiation

  In cosmology, the cosmic microwave background radiation is a form of electromagnetic radiation discovered in 1965. It has a thermal black-body spectrum which peaks in the microwave range. Most ... > more
• Optics
  Cosmic Rays
  Physics
  Medical Technology
  Black Holes
  Astrophysics
   
  

  Electromagnetic spectrum

  The electromagnetic spectrum is the range of all possible electromagnetic radiation. Above infrared in frequency comes visible light. This is the range in which the sun and stars similar to it emit ... > more
• Space Station
  NASA
  Space Exploration
  Space Probes
  Space Missions
  Astronomy
   
  

  Space Shuttle program

  NASA's Space Shuttle, officially called Space Transportation System (STS), is the United States government's only manned launch vehicle currently in service. It is the first winged manned spacecraft ... > more
• Astronomy
  Galaxies
  Cosmic Rays
  Black Holes
  Solar Flare
  Stars
   
  

  Light-year

  A light-year or lightyear (symbol: ly) is a unit of measurement of length, specifically the distance light travels in a vacuum in one year. While there is no authoritative decision on which year is ... > more

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