Latest Planetary atmospheres Stories

2005-03-30 12:07:14

Astrobiology Magazine -- Jonathan Lunine, a professor of planetary science and physics at the University of Arizona's Lunar and Planetary Laboratory in Tucson, Arizona, is also an interdisciplinary scientist on the Cassini/Huygens mission. Lunine presented a lecture entitled "Titan: A Personal View after Cassini's first six months in Saturn orbit" at a NASA Director's Seminar on January 24, 2005. This edited transcript of the Director's Seminar is Part 4 of a 4-part series. ----- "The...

2005-01-28 08:01:13

Like Earth and Venus, the night side of Mars emits a subtle glow. In this interview with Astrobiology Magazine, Jean-Loup Bertaux, Principal Investigator for the Mars Express SPICAM instrument, explains what lights up the martian evening sky, and why our understanding of that process could aid future missions to Mars. Astrobiology Magazine -- Jean-Loup Bertaux, of the Service d'Aeronomie du CNRS in France, is Principal Investigator for the spectrometer instrument onboard the European Space...

2004-12-20 08:05:00

NASA -- The Earth is a dynamic entity, and scientists are trying to understand it. Various things in nature grow and shrink, such as ice sheets, glaciers, forests, rivers, clouds and atmospheric pollutants, serving as the pulse of the planet and affecting many people in many walks of life. Scientists using NASA's Ice, Cloud, and land Elevation Satellite (ICESat) are measuring the height of these dynamic features from space with unprecedented accuracy, providing a new way of understanding our...

2004-12-17 07:35:00

The probe orbiting Saturn is not the only eye on Titan, the ringed planet's largest moon. Powerful ground telescopes have glimpsed storms travelling around the moon's mid-latitudes, not just near the south pole. One theory of how these storms arise relies on icy volcanoes beneath the thick haze and clouds. AM/Gemini-- Astronomers had seen storms around Titan's south pole before, but now they've been discovered at the moon's mid-latitudes as well. The discovery was made using the Gemini North...

2004-12-11 11:10:00

SwRI -- The Sun's atmosphere is filled with ultrasound-like waves that may help solve decades-old mysteries about the Sun and space weather, according to Southwest Research Institute scientists who found the waves in data from NASA's TRACE spacecraft. Astrophysical Journal Letters reports on the findings in its December 10 issue. Dubbed "solar ultrasound," the waves are approximately 300 times deeper than the deepest pitch audible to the human ear, at a frequency of 100 millihertz (10-second...

Latest Planetary atmospheres Reference Libraries

Earth's Atmosphere
2004-10-19 04:45:44

Earth's Atmosphere -- Earth's atmosphere consists of nitrogen (78.1%) and oxygen (20.9%), with small amounts of argon (0.9%), carbon dioxide (variable, but around 0.035%), water vapor, and other gases. The atmosphere protects life on Earth by absorbing ultraviolet solar radiation and reducing temperature extremes between day and night. 75% of the atmosphere exists within 11km of the planetary surface. Temperature and the Atmospheric Layers The temperature of the Earth's atmosphere...

2004-10-19 04:45:44

Sky -- Although almost everyone have seen it, sky is hard to be defined precisely. Generally, sky is the space seen when one looks upward from the surface of a planet. Some people define sky as the denser gaseous zone of a planet's atmosphere. Clouds, rainbows and weather all occur amongst a planet's sky. In astronomy, the sky is divided into many regions, called constellations. The blue colour of the daytime sky results from the selective scattering of light rays. When the sunlight...

2004-10-19 04:45:41

Saturn's moon Titan -- Titan is the planet Saturn's largest moon. It is larger than either of the planets Mercury or Pluto and is the second-largest moon in the solar system after Ganymede (it was originally thought to be slightly larger than Ganymede, but recent observations have shown that its thick atmosphere caused overestimation of its diameter). Titan was discovered on March 25, 1655 by the Dutch astronomer Christian Huygens, making it one of the first non-terrestrial moons to be...

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Word of the Day
  • Like a worm in form or movement; vermiform; tortuous or sinuous; also, writhing or wriggling.
  • Like the track or trace of a worm; appearing as if worm-eaten; vermiculate.
  • Marked with fine, close-set, wavy or tortuous lines of color; vermiculated.
  • A form of rusticated masonry which is so wrought as to appear thickly indented with worm-tracks.
This word ultimately comes from the Latin 'vermis,' worm.