Planet Uranus 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
• 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
• Moon
  NASA
  Space Missions
  Space Exploration
  Solar System
  Astronomy
   
  

  Apollo 11

  Apollo 11 was an American space mission, part of the Apollo program and the first manned mission to land on the Moon.It was the fifth human spaceflight of the Apollo program, and the third human ... > more
• Sun
  Solar Flare
  Northern Lights
  Satellites
  Astronomy
  Solar System
   
  

  Geomagnetic storm

  A geomagnetic storm is a temporary disturbance of the Earth's magnetosphere. Associated with solar coronal mass ejections, coronal holes, or solar flares, a geomagnetic storm is caused by a solar ... > more
• Space Telescopes
  Space Exploration
  NASA
  Satellites
  Astronomy
  Cosmic Rays
   
  

  Telescope

  A telescope is an instrument designed for the observation of remote objects. The term usually refers to optical telescopes, but there are telescopes for most of the spectrum of electromagnetic ... > more
• Galaxies
  Astrophysics
  Astronomy
  Stars
  NASA
  Space Telescopes
   
  

  Galaxy

  A galaxy is a massive, gravitationally bound system consisting of stars, an interstellar medium of gas and dust, and dark matter. Typical galaxies range from dwarfs with as few as ten million stars ... > more
• Black Holes
  Astronomy
  Galaxies
  Stars
  Astrophysics
  Nebulae
   
  

  Supernova

  A supernova (plural supernovae) is a stellar explosion which produces an extremely bright object made of plasma that declines to invisibility over weeks or months. A supernova briefly outshines its ... > more
• NASA
  Space Telescopes
  Space Exploration
  Galaxies
  Astrophysics
  Black Holes
   
  

  Hubble Deep Field

  The Hubble Deep Field (HDF) is an image of a small region of the sky, based on the results of a series of observations by the Hubble Space Telescope. The field is so small that only a few foreground ... > more
• Solar Flare
  Cosmic Rays
  Sun
  Asteroids, Comets and Meteors
  NASA
  Satellites
   
  

  Van Allen radiation belt

  The Van Allen radiation belt is a torus of energetic charged particles (i.e. a plasma) around Earth, trapped by Earth's magnetic field. When the belts "overload", particles strike the upper ... > more
• NASA
  Space Telescopes
  Astronomy
  Space Exploration
  Satellites
  Galaxies
   
  

  Spitzer Space Telescope

  Spitzer Space Telescope (formerly the Space Infrared Telescope Facility [SIRTF]) is an infrared space observatory, the fourth and final of NASA's Great Observatories. The first images taken by SST ... > more

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