Northern Lights Articles

• NASA
  Space Exploration
  Space Missions
  Astronomy
  Cosmology
  Astrophysics
   
  

  Carl Sagan

  Dr Carl Edward Sagan (November 9, 1934 - December 20, 1996) was an American astronomer, astrobiologist and highly successful science popularizer. He pioneered exobiology and promoted the Search for ... > more
• Chemistry
  Nature of Water
  Inorganic Chemistry
  Sports Science
  Thermodynamics
  Graphene
   
  

  Sodium

  Sodium is the chemical element in the periodic table that has the symbol Na and atomic number 11. Sodium is a soft, waxy, silvery reactive metal belonging to the alkali metals that is abundant in ... > more
• Black Holes
  Astrophysics
  Cosmology
  Astronomy
  Big Bang
  Stars
   
  

  Stephen Hawking

  Stephen William Hawking, CH, CBE, FRS (born 8 January 1942) is a theoretical physicist. Hawking is the Lucasian Professor of Mathematics at the University of Cambridge, and a Fellow of Gonville and ... > more
• Physics
  Albert Einstein
  Quantum Physics
  Black Holes
  Sports Science
  Cosmic Rays
   
  

  Special relativity

  Special relativity inter-relates space and time in such a way that the speed of light is constant, and the theory leads to situations where two observers can disagree over time intervals and ... > more
• Moon
  NASA
  Space Missions
  Space Exploration
  Space Station
  Astronomy
   
  

  Buzz Aldrin

  Colonel Buzz Aldrin, Sc.D (born January 20, 1930 as Edwin Eugene Aldrin, Jr.) is an American pilot and astronaut who became the second human to set foot on the Moon (after Neil Armstrong) during the ... > 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
• 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
• Space Probes
  Space Exploration
  Space Station
  Astronomy
  Astrophysics
  Space Telescopes
   

  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
• Cosmic Rays
  Black Holes
  Detectors
  Space Telescopes
  Medical Technology
  Medical Imaging
   
  

  X-ray

  X-rays are a form of electromagnetic radiation with a wavelength in the range of 10 to 0.1 nanometers, corresponding to frequencies in the range 30 to 3000 PHz. X-rays are primarily used for ... > 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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