Astrophysics Articles

• Galaxies
  Astronomy
  Stars
  Astrophysics
  Solar Flare
  Black Holes
   
  

  Milky Way

  The Milky Way is a barred spiral galaxy which forms part of the Local Group. Although the Milky Way is but one of billions of galaxies in the universe, the Galaxy has special significance to humanity ... > more
• Astrophysics
  Dark Matter
  Cosmology
  Astronomy
  Big Bang
  Black Holes
   
  

  Dark energy

  In physical cosmology, dark energy is a hypothetical form of energy that permeates all of space and tends to increase the rate of expansion of the universe. Assuming the existence of dark energy is ... > more
• Space Telescopes
  Space Exploration
  Astronomy
  NASA
  Satellites
  Astrophysics
   
  

  Radio telescope

  A radio telescope is a form of radio receiver used in astronomy. In contrast to an "ordinary" telescope, which receives visible light, a radio telescope "sees" radio waves emitted by radio sources, ... > more
• Extrasolar Planets
  Stars
  Solar System
  Astronomy
  Sun
  Mars
   
  

  Planetary habitability

  Planetary habitability is the measure of an astronomical body's potential to develop and sustain life. It is generally assumed that any extraterrestrial life that might exist will be based on the ... > more
• Cosmology
  Big Bang
  Astrophysics
  Black Holes
  Space Telescopes
  Astronomy
   
  

  Multiverse

  A multiverse (or meta-universe) is the hypothetical set of multiple possible universes, including our universe, which comprise the absolute whole of physical ... > more
• Physics
  Quantum Physics
  Astrophysics
  Black Holes
  Albert Einstein
  Nuclear Energy
   
  

  Physics

  Physics is the science of matter and its motion—the science that deals with concepts such as force, energy, mass, and charge. As an experimental science, its goal is to understand the natural ... > 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
• Mars
  Extrasolar Planets
  Solar System
  NASA
  Space Missions
  Space Exploration
   

  Astrobiology

  Astrobiology is the study of life in space, combining aspects of astronomy, biology and geology. It is focused primarily on the study of the origin, distribution and evolution of ... > more
• Alternative Fuels
  Astrophysics
  Fuel Cells
  Organic Chemistry
  Galaxies
  Chemistry
   
  

  Hydrogen

  Hydrogen is a chemical element in the periodic table that has the symbol H and atomic number 1. At standard temperature and pressure it is a colorless, odorless, nonmetallic, univalent, tasteless, ... > 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

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