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Latest Planetary geology Stories

Forces Of Martian Nature
2014-07-11 03:24:38

ESA The surface of Mars is pocked and scarred with giant impact craters and rocky ridges, as shown in this new image from ESA’s Mars Express that borders the giant Hellas basin in the planet’s southern hemisphere. The Hellas basin, some 2300 km across, is the largest visible impact structure in the Solar System, covering the equivalent of just under half the land area of Brazil. The images presented here were taken on 13 January 2014 by the high-resolution stereo camera on Mars...

Martian Dry Ice Gullies Formed By Seasonal CO2 Freezing, Not Water
2014-07-11 09:09:01

Gerard LeBlond for redOrbit.com - Your Universe Online NASA’s Mars Reconnaissance Orbiter (MRO) continually makes high-resolution observations of the surface of Mars. Recent images have revealed that the gullies on the surface are mainly formed by seasonal freezing of carbon dioxide and not liquid water. The report has been published online in the journal Icarus. In 2000, the first reports on these gullies suggested the presence of water on Mars created them by erosion, the same way...

Curiosity Currently Traveling Through Ancient Glaciers On Mars
2014-06-26 03:13:27

FECYT - Spanish Foundation for Science and Technology 3,500 million years ago the Martian crater Gale, through which the NASA rover Curiosity is currently traversing, was covered with glaciers, mainly over its central mound. Very cold liquid water also flowed through its rivers and lakes on the lower-lying areas, forming landscapes similar to those which can be found in Iceland or Alaska. This is reflected in an analysis of the images taken by the spacecraft orbiting the red planet....

2014-05-23 13:27:42

Carnegie Institution Breaking research news from a team of scientists led by Carnegie's Ho-kwang "Dave" Mao reveals that the composition of the Earth's lower mantle may be significantly different than previously thought. These results are to be published by Science. The lower mantle comprises 55 percent of the planet by volume and extends from 670 and 2900 kilometers in depth, as defined by the so-called transition zone (top) and the core-mantle boundary (below). Pressures in the lower...

New Study Finds That Lava Carved The Giant Valleys Of Mars
2014-05-13 07:17:31

April Flowers for redOrbit.com - Your Universe Online In 1877, Giovanni Schiaparelli of Italy first described what he called "canali" on the surface of Mars. These straight landforms on the Martian equatorial region form a conspicuous net-like system of deep gorges called the Noctis Labyrinthus, which is clearly visible. Noctis Labyrinthus leads into the even larger Valles Marineris canyon, which is 2500 miles long,  125 miles wide and 4 miles deep. Together, these two systems would span...

Mars Crater May Have Been Wet In The Relatively Recent Past
2014-04-26 05:08:42

April Flowers for redOrbit.com - Your Universe Online Well preserved gullies and debris flow deposits in a crater on the southern hemisphere of Mars are providing new evidence through their geomorphological attributes that they were formed by the action of liquid water in relatively recent geological times, according to a new study from the University of Gothenburg. On Earth, water becomes a single-phase unit and a flow of debris is created when the sediment on a slope is saturated with...

Small Asteroid Regolith Formed By Thermal Fatigue
2014-04-04 06:21:44

John P. Millis, Ph.D. for redOrbit.com - Your Universe Online Small asteroids contain a layer of loose, unconsolidated rock and dust known as a regolith composed of centimeter-sized fragments and smaller particles. New research from researchers at the Observatoire de la Côte d'Azur, Hopkins Extreme Materials Institute at Johns Hopkins University, Institut Supérieur de l'Aéronautique et de l'Espace and Southwest Research Institute (SwRI), have now determined that this layer is formed by...

John Lennon Shines On: IAU Names Mercury Crater After Rock Legend
2013-12-20 13:34:02

Gerard LeBlond for redorbit.com - Your Universe Online John Lennon was born on October 9, 1940 in Liverpool, England. He started his first band, The Quarrymen, while still in high school. After Paul McCartney and George Harrison joined the band the name was changed to The Beatles. He and his band mates became rock legends, but John met a tragic end on December 8, 1980. Now Lennon, along with nine other notable celebrities of the past, have been honored by having impact craters on...

New Evidence Gives New Life To ‘Percolation’ Theory For Earth’s Core
2013-10-08 17:23:32

Lee Rannals for redOrbit.com – Your Universe Online Scientists writing in the journal Nature Geoscience say that a similar process to that which allows water to yank oils from ground coffee  in order to make a cup of joe in the morning, could be how the Earth's core formed. Stanford University scientists recreated the intense pressures and temperatures inside Earth and found that an iron melt network may have helped grow the Earth's core. The finding revisits a theory first proposed...

Aram Chaos
2013-09-14 03:59:57

April Flowers for redOrbit.com - Your Universe Online The catastrophic melting and outflow of a buried ice lake formed the lumpy, bumpy floor of an ancient impact crater on Mars known as Aram Chaos. Satellite observations of the 173 mile wide and 2.5 mile deep crater were combined with models of the ice melting process and resulting catastrophic outflow for a new study presented at the European Planetary Science Congress (EPSC) at UCL in London by Michael Roda of the Utrecht University....


Latest Planetary geology Reference Libraries

0_fc65ffe6a46cbd9f747aaf6b31e8e244
2010-10-29 20:31:07

Harrison Schmitt was a NASA astronaut, and is also an American geologist. He was born Harrison Hagan "Jack" Schmitt on July 3, 1935 in Santa Rita, New Mexico. After high school, he went to the California Institute of Technology and received a B.S. degree in science in 1957. He then went to Norway to study geology at the University of Oslo. In 1964, Schmitt earned a Ph.D. in geology from Harvard University. After receiving his doctorate, he worked at the U.S. Geological Survey's...

4_eccd202c9b173d8cc2bddcaa6629203b2
2004-10-19 04:45:40

The Planet Venus is the second planet from the sun. It is often called the evening star or morning star and is brighter than any object in the sky except the sun and the moon. Because its orbit lies between the sun and the orbit of the earth, Venus passes through phases like those of the moon, varying from a large bright crescent when the planet is near inferior conjunction (nearest the earth) to a smaller silvery disk when it is at superior conjunction (farthest from the earth). Since...

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Word of the Day
bellycheer
  • Good cheer; viands.
  • To revel; to feast.
The word 'bellycheer' may come from 'belle cheer', "good cheer".
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