Solar System Articles

• Near-Earth Object Impacts
  Asteroids, Comets and Meteors
  Geology
  Saturn
  Earth Science
  Moon
   
  

  Impact crater

  An impact crater is a circular depression on a surface, usually referring to a planet, moon, asteroid, or other celestial body, caused by a collision of a smaller body (meteor) with the ... > more
• Asteroids, Comets and Meteors
  Astronomy
  Solar System
  Sun
  Solar Flare
  Space Exploration
   
  

  Comet

  A comet is a small body in the solar system that orbits the Sun and (at least occasionally) exhibits a coma (or atmosphere) and/or a tail - both primarily from the effects of solar radiation upon the ... > more
• Space Missions
  NASA
  Mars
  Space Exploration
  Solar System
  Space Probes
   
  

  Phoenix (spacecraft)

  The Phoenix is a planned multi-agency Mars lander, headed by the University of Arizona's Lunar and Planetary Laboratory, under the direction of NASA, scheduled to launch on August 3, 2007. It is a ... > more
• Solar System
  Astronomy
  Pluto
  Sun
  Asteroids, Comets and Meteors
  Solar Flare
   
  

  Solar System

  The Solar System consists of the Sun and the other celestial objects gravitationally bound to it: the eight planets, their 165 known moons, three dwarf planets (Ceres, Pluto, and Eris and their four ... > more
• Solar Flare
  Sun
  Northern Lights
  Solar System
  Astronomy
  Cosmic Rays
   
  

  Solar flare

  A solar flare is a violent explosion in the Sun's atmosphere with an energy equivalent to tens of millions of hydrogen bombs. Solar flares take place in the solar corona and chromosphere, heating ... > more
• Venus
  Solar System
  NASA
  Space Missions
  Space Exploration
  Astronomy
   
  

  Venus

  Venus is the second-closest planet to the Sun, orbiting it every 224.7 Earth days. It is the brightest object in the night sky, except for the Moon, reaching an apparent magnitude of -4.6. Venus ... > 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
• Asteroids, Comets and Meteors
  Solar System
  NASA
  Astronomy
  Pluto
  Moon
   
  

  Near-Earth object

  Near-Earth objects (NEO) are asteroids, comets and large meteoroids whose orbit intersects Earth's orbit and which may therefore pose a collision danger. Due to their size and proximity, NEOs are ... > more
• Moon
  Solar System
  Pluto
  Space Missions
  NASA
  Jupiter
   
  

  Moon

  The Moon is Earth's only natural satellite. The average distance from the Earth to the Moon is 384,399 kilometres (238,854 mi), which is about 30 times the diameter of the Earth. At this distance, it ... > more
• Stars
  Galaxies
  Astronomy
  Extrasolar Planets
  Sun
  Cosmic Rays
   
  

  Alpha Centauri

  Alpha Centauri (α Cen / α Centauri) is the brightest star system (a triple star system) in the southern constellation of Centaurus, and contains the fourth brightest star in the night ... > more

Search ScienceDaily