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Latest Planetary atmospheres Stories

How Was Oxygen Before Life Made?
2014-10-06 03:40:50

Provided by Andy Fell, UC Davis About one-fifth of the Earth’s atmosphere is oxygen, pumped out by green plants as a result of photosynthesis and used by most living things on the planet to keep our metabolisms running. But before the first photosynthesizing organisms appeared about 2.4 billion years ago, the atmosphere likely contained mostly carbon dioxide, as is the case today on Mars and Venus. Over the past 40 years, researchers have thought that there must have been a small...

titan southern polar vortex
2014-10-02 06:30:31

Chuck Bednar for redOrbit.com - Your Universe Online Analysis of data collected by NASA’s Cassini mission has revealed the presence of a large, cold, toxic cloud swirling above the south pole of Saturn’s moon Titan, according to research published in the October 2 edition of the journal Nature. According to the US space agency, scientists from the Leiden Observatory in the Netherlands, the SRON Netherlands Institute for Space Research, the University of Bristol’s School of Earth...

nitrogen atoms
2014-09-30 03:00:48

Susan Brown, University of California - San Diego No need for delivery by comet Chemical fingerprints of the element nitrogen vary by extremes in materials from the molecules of life to the solar wind to interstellar dust. Ideas for how this great variety came about have included alien molecules shuttled in by icy comets from beyond our solar system and complex chemical scenarios. New experiments using a powerful source of ultraviolet light have shown that no extra-solar explanation...

Research By NASA Provides Guideline For Future Alien Life Search
2014-09-15 03:57:50

NASA Astronomers searching the atmospheres of alien worlds for gases that might be produced by life can't rely on the detection of just one type, such as oxygen, ozone, or methane, because in some cases these gases can be produced non-biologically, according to extensive simulations by researchers in the NASA Astrobiology Institute’s Virtual Planetary Laboratory. The researchers carefully simulated the atmospheric chemistry of alien worlds devoid of life thousands of times over a...

Exoplanet Atmospheres
2014-03-05 07:53:33

John P. Millis, Ph.D. for redOrbit.com - Your Universe Online The holy grail of planetary astronomy is the search for a potentially habitable planet, or even better, one that is shown to already contain life. There are various parameters that are needed in order to ascertain the habitability of worlds, such as whether liquid water can be sustained on its surface. Recent studies, however, have found that identifying some of these characteristics is rather difficult, and we may in fact...

NASA To Search For Climate Change Clues In The Tropopause
2014-01-18 05:41:07

[ Watch the Video: Global Hawk Gets To Work In The Western Pacific ] redOrbit Staff & Wire Reports - Your Universe Online NASA has deployed their pilot-less Global Hawk research aircraft in the western Pacific in order to monitor changes to the upper atmosphere and discover how changes there are impacting the planet’s climate. The mission, announced by the US space agency on Friday, is part of their Airborne Tropical Tropopause Experiment (ATTREX) airborne science campaign....

2014-01-07 23:02:11

NCAR scientists and partners next week will launch a field project in the tropical Pacific, a remote region that holds a key to understanding worldwide climate. The warm waters fuel huge clusters of thunderstorms that act as a global chimney, lofting gases and particles into the stratosphere and affecting the planet. Boulder, CO (PRWEB) January 07, 2014 Even though few people live in the western tropical Pacific Ocean, these remote waters affect billions of people by shaping climate and...

2013-12-31 16:20:12

WASHINGTON, Dec. 31, 2013 /PRNewswire-USNewswire/ -- Scientists using NASA's Hubble Space Telescope have characterized the atmospheres of two of the most common type of planets in the Milky Way galaxy and found both may be blanketed with clouds. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) The planets are GJ 436b, located 36 light-years from Earth in the constellation Leo, and GJ 1214b, 40 light-years away in the constellation Ophiuchus. Despite numerous efforts,...

Noctilucent Clouds In Antarctica Being Studied Closely By NASA's AIM Mission
2013-12-24 11:17:05

[ Watch the Video: ScienceCasts: Electric-Blue Clouds Appear Over Antarctica ] Lee Rannals for redOrbit.com - Your Universe Online A group of electric-blue clouds are hovering over Antarctica right now, and NASA’s AIM spacecraft is helping scientists better understand them. Noctilucent clouds (NLCs) are the Earth’s highest clouds, forming at the edge of space, 51 miles above the Earth’s surface. From a plane, the clouds appear as slivers of light streaking across the sky,...

Mystery Of Troposphere Warming Solved
2013-12-10 14:44:32

Lee Rannals for redOrbit.com - Your Universe Online A long-standing mystery surrounding unusual warming of planetary atmospheres is not just exclusive to our solar system, but is most likely universal, according to a paper published in the journal Nature Geoscience. In 1902 a scientist named Léon Teisserenc de Bort found a point in Earth’s atmosphere where the air stops cooling and begins growing warmer. This finding was surprising considering scientists knew that as you climb in...


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...

Sky
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...

4_8f22c004497825023679cbda1abc7a952
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
abrosia
  • Wasting away as a result of abstinence from food.
The word 'abrosia' comes from a Greek roots meaning 'not' and 'eating'.