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Latest Olivine Stories

asteroid Vesta
2014-07-18 05:31:53

Brett Smith for redOrbit.com - Your Universe Online An investigation of Vesta, a massive asteroid that orbits the Sun between Mars and Jupiter, has revealed that the planet-like body has a thicker crust than previously thought, which calls into question the internal structures of other planets in the Solar System. The investigation, which is published in the journal Nature, is based on data from the Dawn spacecraft that NASA sent into Vesta's orbit between July 2011 and July 2012. Using...

An Ocean's Worth Of Water May Be Sitting In North American Mantle
2014-06-13 10:28:29

Brett Smith for redOrbit.com - Your Universe Online While all of Earth’s oceans may seem like more than enough water for one planet, a new study published in the journal Science has revealed an ocean’s worth of water may be sitting in the mantle, hundreds of miles below North America. According to the study, molecular water is stored away in a mineral called ringwoodite about 400 miles below the Earth’s surface. The study team said this stored water is sitting in a transition...

Dawn Mission Data Offers New Evidence On Vesta Asteroid's History
2013-11-07 15:32:00

Lee Rannals for redOrbit.com - Your Universe Online A new paper published in the journal Nature rewrites the history of the giant asteroid Vesta, which was recently visited by NASA’s Dawn mission. It was during the Dawn mission that the spacecraft used its visible and infrared mapping spectrometer instrument to map out the surface of the asteroid, leading scientists to the belief that Vesta’s formation followed the script that rocky planets followed, where the mineral olivine should...

2013-09-24 13:34:49

Scientists broke new ground in the study of deep earthquakes, a poorly understood phenomenon that occurs where the oceanic lithosphere, driven by tectonics, plunges under continental plates – examples are off the coasts of the western United States, Russia and Japan. This research is a large step toward replicating the full power of these earthquakes to learn what sets them off and how they unleash their violence. It was made possible only by the construction of a one-of-a-kind X-ray...

Cosmochemists Help Solve 135-Year-Old Meteorite Mystery
2013-07-08 15:09:49

Lee Rannals for redOrbit.com - Your Universe Online Scientists have provided a solution to a 135-year-old mystery in cosmochemistry, saying chondrules may have formed from high-pressure collisions in the early Solar System. Chondrites are the largest class of meteorites, and scientists have wondered how numerous small, glassy spherules had become embedded within them. British mineralogist Henry Sorby first described these spherules in 1877 and suggested they may be "droplets of fiery...

2013-06-13 10:52:22

Reassessment of the role of water in plate tectonics Water in the Earth's crust and upper mantle may not play such an important role as a lubricant of plate tectonics as previously assumed. This is a result geoscientists present in the current issue of the scientific journal Nature (13/06/2013) after the examination of water in the mineral olivine. Laboratory experiments over the past three decades have suggested the presence of water greatly weakens the mechanical strength of the...

Moon's Water Supply Came From Earth, Not From Comet Impacts
2013-05-09 13:34:08

John P. Millis, Ph.D. for redOrbit.com - Your Universe Online Prior to the Apollo Moon missions, scientists conjectured that the Moon would be extremely dry, that even below the surface of the Magnificent Desolation little or no water would be present. But the rocks brought back by the lunar explorers revealed that the Moon, while still dry compared to Earth, contained a surprising amount of water. Furthermore, the composition of the Moon led scientists to the current Big Impact...

Scientists Analyze Costs And Benefits Of Rock Dissolving Practices
2013-01-22 12:14:08

Brett Smith for redOrbit.com - Your Universe Online Geoengineering is a controversial and illegal practice that attempts to mitigate the forces of climate change on a grand scale. Many see this attempt to alter global climate via artificial means as a ℠quick fix´ with potential long-term negative effects. However, despite the contentious nature of geoengineering, scientists from the Alfred Wegener Institute in Bremerhaven, Germany decided to analyze a ℠rock...

Violent Collision Created Rare Meteorite
2012-11-16 11:32:50

April Flowers for redOrbit.com - Your Universe Online Some meteorites found on Earth contain strikingly beautiful, translucent, olive-green crystals embedded in an iron-nickel matrix. These "space gems," called pallasites, are only found in a tiny fraction of the total number of meteorites, but they have fascinated scientists since they were first identified as originating in outer space more than 200 years ago. A new study, published in the journal Science and led by John Tarduno at...

Olivine Found In Beta Pictoris
2012-10-04 05:20:13

April Flowers for redOrbit.com - Your Universe Online European Space Agency's (ESA) Herschel Space Observatory has discovered pristine material that matches comets in our own Solar System in a dust belt around the young star Beta Pictoris. Beta Pictoris is 12 million years old, and resides a short 63 light-years from Earth. A gas giant planet and a dusty debris disc that has the potential to evolve into a torus of icy bodies like those of the Kuiper Belt found outside the orbit of...


Word of the Day
holluschickie
  • A 'bachelor seal'; a young male seal which is prevented from mating by its herd's older males (mated bulls defending their territory).
This comes from the Russian word for 'bachelors.'
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