Dark Matter and Dark Energy Articles

• 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
• Physics
  Quantum Physics
  Quantum Computing
  Spintronics
  Black Holes
  Graphene
   
  

  Quantum number

  A quantum number describes the energies of electrons in atoms. Each quantum number specifies the value of a conserved quantity in the dynamics of the quantum system. Since any quantum system can have ... > more
• Mars
  NASA
  Space Missions
  Solar System
  Space Exploration
  Astronomy
   
  

  Mars

  Mars is the fourth planet from the Sun in our solar system. It is named after Mars, the Roman god of war. Mars has also earned the nickname "The Red Planet" due to the reddish appearance it has when ... > more
• Stars
  Astrophysics
  Astronomy
  Sun
  Extrasolar Planets
  Sports Science
   
  

  Luminosity

  In general physics, luminosity (more properly called luminance) is the density of luminous intensity in a given ... > more
• Solar System
  Extrasolar Planets
  Kuiper Belt
  Pluto
  Astronomy
  Eris (Xena)
   
  

  Planet

  The International Astronomical Union defines "planet" as a celestial body that, within the Solar System that is in orbit around the Sun; has sufficient mass for its self-gravity to overcome rigid ... > 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
• Jupiter
  Solar System
  Moon
  Pluto
  Kuiper Belt
  Astronomy
   
  

  Jupiter's natural satellites

  Jupiter has 63 known natural satellites. Although claims are made for the observation of one of Jupiter's moons by Chinese astronomer Gan De in 364 BC, the first certain observations of Jupiter's ... > more
• Space Missions
  Space Exploration
  NASA
  Uranus
  Space Probes
  Jupiter
   
  

  Voyager program

  The Voyager program consisted of a pair of unmanned scientific probes, Voyager 1 and Voyager 2, launched in 1977. They were sent to study Jupiter and Saturn, using an advantageous planetary alignment ... > more
• Venus
  Solar System
  Astronomy
  Sun
  NASA
  Space Exploration
   
  

  Transit of Venus

  A transit of Venus across the Sun takes place when the planet Venus passes directly between the Sun and the Earth, obscuring a small portion of the Sun's ... > more
• Stars
  Extrasolar Planets
  Jupiter
  Sun
  Astronomy
  Solar Flare
   
  

  Red giant

  A red giant is a large non-main sequence star of stellar classification K or M; so-named because of the reddish appearance of the cooler giant stars. As Earth's sun is of one solar mass, it is ... > more

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