Asteroid, Comet, Meteor Articles

• Quantum Physics
  Physics
  Cosmic Rays
  Detectors
  Astrophysics
  Black Holes
   
  

  Neutrino

  The neutrino is an elementary particle. It has half-integer spin and is therefore a fermion. All neutrinos observed to date have left-handed chirality. Although they had been considered massless for ... > more
• Astronomy
  Cosmology
  Sun
  Solar System
  Extrasolar Planets
  Satellites
   
  

  Nicolaus Copernicus

  Nicolaus Copernicus (February 19, 1473 - May 24, 1543) was the astronomer who formulated the first modern heliocentric theory of the solar system. His epochal text, De revolutionibus orbium ... > more
• Stars
  Black Holes
  Nebulae
  Astrophysics
  Galaxies
  Extrasolar Planets
   
  

  Stellar evolution

  In astronomy, stellar evolution is the sequence of changes that a star undergoes during its lifetime; the hundreds of thousands, millions or billions of years during which it emits light and heat. ... > more
• Galaxies
  Astronomy
  Astrophysics
  Stars
  NASA
  Space Telescopes
   
  

  Andromeda Galaxy

  TThe Andromeda Galaxy (also known as Messier 31, M31, or NGC 224; older texts often called it the Andromeda Nebula) is a spiral galaxy approximately 2.5 million light-years away in the constellation ... > 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
• Space Station
  NASA
  Space Missions
  Space Exploration
  Astronomy
  Space Probes
   
  

  Space suit

  A space suit is a complex system of garments and equipment and environmental systems designed to keep a person alive and comfortable in the harsh environment of outer ... > more
• Galaxies
  Astrophysics
  Cosmology
  Astronomy
  Big Bang
  Space Telescopes
   
  

  Large-scale structure of the cosmos

  In physical cosmology, the term large-scale structure refers to the characterization of observable distributions of matter and light on the largest scales (typically on the order of billions of ... > more
• Quantum Physics
  Physics
  Chemistry
  Inorganic Chemistry
  Cosmic Rays
  Graphene
   
  

  Atom

  In chemistry and physics, an atom is the smallest particle of a chemical element that retains its chemical properties. An atom consists of a dense nucleus of positively-charged protons and ... > 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
• Space Probes
  Space Exploration
  Space Station
  Astronomy
  NASA
  Space Missions
   
  

  Spacecraft propulsion

  Spacecraft propulsion is used to change the velocity of spacecraft and artificial satellites, or in short, to provide delta-v. There are many different methods. Each method has drawbacks and ... > more

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