Star Articles

• Mathematics
  Computer Graphics
  Math Puzzles
  Mathematical Modeling
  Computer Modeling
  Computer Programming
   
  

  Ellipse

  In mathematics, an ellipse is a plane algebraic curve where the sum of the distances from any point on the curve to two fixed points is constant. An ellipse can be drawn with two pins, a loop of ... > more
• Northern Lights
  Space Exploration
  Space Missions
  Space Station
  NASA
  Space Probes
   
  

  Ion thruster

  An ion thruster (or ion drive), one of several types of spacecraft propulsion, uses beams of ions - electrically charged atoms or molecules - for propulsion. The precise method for accelerating the ... > more
• Asteroids, Comets and Meteors
  NASA
  Mars
  Space Exploration
  Space Missions
  Pluto
   
  

  Torino Scale

  The Torino Scale is a method for categorizing the impact hazard associated with near-Earth objects (NEOs) such as asteroids and ... > more
• Solar System
  Neptune
  Pluto
  Moon
  Jupiter
  Satellites
   
  

  Neptune's natural satellites

  Neptune has 13 known moons. The largest by far is Triton, discovered by William Lassell just 17 days after the discovery of Neptune itself. It took a hundred years to discover the second, Nereid. ... > more
• Asteroids, Comets and Meteors
  Solar System
  Astronomy
  Pluto
  Satellites
  Solar Flare
   

  Near-Earth asteroid

  Near-Earth asteroids (NEAs) are asteroids whose orbits are close to Earth's orbit. Some NEAs' orbits intersect Earth's so they pose a collision danger. On the other hand, NEAs are most easily ... > more
• NASA
  Space Telescopes
  Astrophysics
  Space Exploration
  Galaxies
  Sports Science
   
  

  Edwin Hubble

  Edwin Powell Hubble (November 20, 1889 - September 28, 1953) was an American astronomer, noted for his discovery of galaxies beyond the Milky Way and the cosmological redshift. Edwin Hubble was one ... > more
• Solar Flare
  Cosmic Rays
  Sun
  Asteroids, Comets and Meteors
  NASA
  Satellites
   
  

  Van Allen radiation belt

  The Van Allen radiation belt is a torus of energetic charged particles (i.e. a plasma) around Earth, trapped by Earth's magnetic field. When the belts "overload", particles strike the upper ... > more
• Space Station
  Space Exploration
  NASA
  Space Probes
  Space Missions
  Astronomy
   
  

  Space exploration

  Space exploration is the physical exploration of outer space, both by human spaceflights and by robotic spacecraft. While the observation of objects in space—known as astronomy—pre-dates ... > more
• Sun
  Geomagnetic Storms
  Solar Flare
  Astronomy
  Earth Science
  Geology
   
  

  Solstice

  The summer solstice is an astronomical term regarding the position of the sun in relation to the celestial equator. The summer solstice is the day of the year with the longest daylight period and ... > more
• 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

Search ScienceDaily