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Latest Planetary Science Institute Stories

NASA’s Dawn Spacecraft Provides More Information On Asteroid Vesta
2013-09-27 17:17:01

[ Watch the Video: Asteroid Vesta Visited By NASA's Dawn Spacecraft ] Michael Harper for redOrbit.com – Your Universe Online The asteroid Vesta, the second largest in the asteroid belt, has been particularly interesting to astronomers since it was first discovered in 1807. Early observations by the Hubble telescope showed the asteroid was mostly composed like Earth; complete with a crust, mantle and core. It was also discovered that the color and composition of Vesta’s surface...

Ancient Mars Caverns May Have Captured Flood Water
2012-12-05 16:24:33

Lee Rannals for redOrbit.com — Your Universe Online Researchers have found evidence that ancient caverns on Mars may have captured enormous flood waters some 2 billion years ago. Planetary Science Institute researchers studied the terminal regions of the Hebrus Valles, which is an outflow channel that extends about 155 miles downstream from two zones of surface collapse. The Martian outflow channels are made up of some of the largest known channels in the solar system....

Climate Models Work For Mars Too
2012-10-17 10:56:49

Lee Rannals for redOrbit.com - Your Universe Online According to a new study, scientific modeling methods that predicated climate change on Earth can also be used on Mars as well. Researchers from Planetary Science Institute in Tucson report they have found that an unusual concentration of glacial features on Mars matches predictions made by global climate computerized models, in terms of age and location. "Some public figures imply that modeling of global climate change on Earth is...

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2010-06-08 13:45:00

Scientists have found further evidence that massive seas once existed on Mars. A geological mapping project discovered sedimentary deposits in a region called Hellas Planitia, which suggests it was once a large sea. The 1,200 mile wide basin is a giant impact crater, the largest one on Mars. The team says their data supports the theory that a lake existed there between 4.5 and 3.5 billion years ago. Some scientists believe that conditions on Mars were more favorable for the evolution of...

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2008-12-17 13:45:00

As scientists search for life on Mars, they should take a close look at rock varnish, according to a paper in the current issue of the "Journal of Geophysical Research." The paper describes how a research team led by Kimberly R. Kuhlman, of the Tucson-based Planetary Science Institute, found bacteria associated with rock varnish in an area where the surrounding soils were essentially devoid of life. The study suggests that rock varnish could provide a niche habitat for microbial life on Mars...


Word of the Day
Cthulhu
  • A gigantic fictional humanoid alien god being described with a head resembling an octopus and dragon wings and claws, around whom an insane cult developed.
  • Pertaining to the mythos of Cthulhu and additional otherworldly beings created by H. P. Lovecraft or inspired by his writings and imitators.
This word was invented in 1926 by H.P. Lovecraft for his short story, 'The Call of Cthulhu.' 'Cthulhu' may be based on the word 'chthonic,' which in Greek mythology refers to the underworld.
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