Cosmology Articles

• Space Probes
  Space Exploration
  Space Station
  Astrophysics
  Solar Flare
  Astronomy
   
  

  Rocket engine

  A rocket engine is a reaction engine that can be used for spacecraft propulsion as well as terrestrial uses, such as missiles. Rocket engines take their reaction mass from within the vehicle and form ... > more
• Space Probes
  Space Station
  Space Exploration
  NASA
  Astronomy
  Space Missions
   
  

  Solid-fuel rocket

  A solid rocket or a solid fuel rocket is a rocket with a motor that uses solid propellants (fuel/oxidizer). The earliest rockets were solid fuelled, powered by gunpowder, used by the Chinese in ... > more
• Near-Earth Object Impacts
  Asteroids, Comets and Meteors
  Geology
  Saturn
  Earth Science
  Moon
   
  

  Impact crater

  An impact crater is a circular depression on a surface, usually referring to a planet, moon, asteroid, or other celestial body, caused by a collision of a smaller body (meteor) with the ... > more
• Solar System
  Pluto
  Kuiper Belt
  Satellites
  Moon
  Eris (Xena)
   
  

  Dysnomia (moon)

  Dysnomia, is a moon of the dwarf planet Eris. The satellite is about 60 times fainter than Eris, and its diameter is estimated to be approximately eight times smaller. Astronomers now know that three ... > more
• Space Probes
  Space Exploration
  Space Station
  Astronomy
  Space Telescopes
  Astrophysics
   

  Hybrid rocket

  A hybrid rocket propulsion system comprises propellants of two different states of matter, the most common configuration being a rocket engine composed of a solid propellant lining a combustion ... > more
• Uranus
  Solar System
  Astronomy
  Pluto
  Jupiter
  Moon
   
  

  Uranus

  Uranus is the seventh planet from the Sun. It is a gas giant, the third largest by diameter and fourth largest by mass. NASA's Voyager 2 is the only spacecraft to have visited the planet and no other ... > more
• Sports Science
  Ancient Civilizations
  Fossils
  Solar Flare
  Technology
  Moon
   
  

  Antikythera mechanism

  The Antikythera mechanism is an ancient mechanical analog computer (as opposed to digital computer) designed to calculate astronomical positions. It was discovered in the Antikythera wreck off the ... > more
• Black Holes
  Astrophysics
  Sports Science
  Sun
  Cosmic Rays
  Solar Flare
   
  

  Black body

  In physics, a black body is an object that absorbs all electromagnetic radiation that falls onto it. No radiation passes through it and none is reflected, yet in classical physics, it can ... > more
• Satellites
  Space Probes
  Space Station
  Space Exploration
  NASA
  Space Telescopes
   
  

  Militarisation of space

  The militarisation of space1 is the placement and development of weaponry in outer space by the militaries of the ... > more
• NASA
  Space Exploration
  Space Missions
  Space Station
  Astronomy
  Space Probes
   
  

  NASA

  The National Aeronautics and Space Administration (NASA), which was established in 1958, is the agency responsible for the public space program of the United States of America. NASA's vision is "to ... > more

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