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Mars: Red Planet’s Rapid Formation Explains Its Small Size Relative to Earth

By Guest PostMay 27, 2011Scienceali pourmand, atmosphere, chemical behavior, chondrites, composition of chondrites, computer simulation, dauphas and pourmand, earth, embryos, enriqueta barrera, fine scale chronology, geophysicist, hafnium, lithophile elements, mantle of mars, mars, martian meteorites, national science foundation, nicolas dauphas, non volatile elements, nsf, radioactive decay, red planet, refractory, solar system, tungsten in meteorites, tungsten isotopic composition, university of chicago, xenon content

*Mars developed far more quickly than our blue planet*

Mars developed in as little as two to four million years after the birth of the solar system, far more quickly than Earth, according to results of a new study published in this week’s issue of the journal Nature.

The red planet’s rapid formation helps explain why it is so small, say the study’s co-authors, Nicolas Dauphas at the University of Chicago and Ali Pourmand at the University of Miami. (more…)

Four Planets Huddle Up Before Dawn Next Week

By Guest PostMay 8, 2011Scienceanimation, beautiful astronomical photos, binoculars, ecliptic, jupiter, mars, mcdonald observatory, mercury, moon, page sky almanac, planets, sky, skymaps, skywatching events, stardate magazin, venus

AUSTIN, Texas — Four of the five planets visible to the unaided eye huddle quite close together in the pre-dawn sky next week, according to the editors of StarDate magazine.

On the morning of May 10, Venus and Jupiter will stand side by side, quite low in the east, as dawn brightens. If you have a horizon clear of buildings and trees, they will be easy to spot. They are the brightest objects in the night sky after the moon. Venus is the brighter of the two. Jupiter is to its left. (more…)

NASA Orbiter Reveals Big Changes in Mars’ Atmosphere

By Guest PostApril 22, 2011Scienceatmosphere, dry ice, frozen carbon dioxide, greenhouse effect, lake superior, liquid water, mars, mars reconnaissance orbiter, martian carbon dioxide, martian dust storms, martian surface, NASA, red planet, roberto seu, roger phillips, south pole

PASADENA, Calif. — NASA’s Mars Reconnaissance Orbiter has discovered the total amount of atmosphere on Mars changes dramatically as the tilt of the planet’s axis varies. This process can affect the stability of liquid water, if it exists on the Martian surface, and increase the frequency and severity of Martian dust storms.

Researchers using the orbiter’s ground-penetrating radar identified a large, buried deposit of frozen carbon dioxide, or dry ice, at the Red Planet’s south pole. The scientists suspect that much of this carbon dioxide enters the planet’s atmosphere and swells the atmosphere’s mass when Mars’ tilt increases. The findings are published in this week’s issue of the journal Science. (more…)

Northern Mars Landscape Actively Changing

By Guest PostFebruary 5, 2011Sciencecandice hansen, carbon dioxide ice, high resolution imaging science experiment, hirise, hirise camera, image, landscape, mars, martian dunes, martian years, nasa orbiter, north polar cap, northern mars, sand dunes, serina diniega, texas

Sand dunes in a vast area of northern Mars long thought to be frozen in time are changing with both sudden and gradual motions, according to research using images from a NASA orbiter.

These dune fields cover an area the size of Texas in a band around the planet at the edge of Mars’ north polar cap. The new findings suggest they are among the most active landscapes on Mars. However, few changes in these dark-toned dunes had been detected before a campaign of repeated imaging by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA’s Mars Reconnaissance Orbiter, which reached Mars five years ago next month. (more…)

Mars Movie: I’m Dreaming of a Blue Sunset

By Guest PostDecember 26, 20103 commentsSciencedust particles, french author, jim bell, marcel proust, mark lemmon, mars, mars exploration rover opportunity, mars movie, martian moons, martian sky, martian sunset, moon phobos, opportunity, pancam, robotic emissaries, spirit, sun, sunset movie, sunset movie from mars

A new Mars movie clip gives us a rover’s-eye view of a bluish Martian sunset, while another clip shows the silhouette of the moon Phobos passing in front of the sun.

America’s Mars Exploration Rover Opportunity, carefully guided by researchers with an artistic sense, has recorded images used in the simulated movies.

These holiday treats from the rover’s panoramic camera, or Pancam, offer travel fans a view akin to standing on Mars and watching the sky. (more…)

Microsoft and NASA Bring Mars Down to Earth Through the WorldWide Telescope

By Guest PostJuly 13, 20102 commentsScience, Technologyames research center, Baltimore, california, california institute of technology, earth, energy, Environment, fay, high resolution imaging science experiment, hirise, hubble, intelligent robotics group, irg, mars, mars orbiter laser altimeter, martian surface, michael broxton, Microsoft, mola, NASA, nebula, pasadena, red planet, san josé, WorldWide Telescope

*Dramatic imagery from NASA Mars missions creates new user experiences in the Microsoft Research WorldWide Telescope.*

REDMOND, Wash. — Microsoft Research and NASA are providing an entirely new experience to users of the WorldWide Telescope, which will allow visitors to interact with and explore our solar system like never before.

(more…)

Join us in our ‚Environment Awareness Group‘

By ShamsApril 18, 2010Environmentblue and green, blue and green planet, climate changes, earth, environment awareness group, environmental pollution, Facebook, healthy and happy, healthy and happy earth, human knowledge, mars, ocean exploration

Dear Friends,

Join us in our ‘Environment Awareness Group’. It’s in Facebook.