A Martian Mineral History
The large dark area right of center on the hemisphere view of Mars is Syrtis Major. The map shows the presence of water-bearing clay minerals identified by OMEGA data. Blue indicates small amounts and orange-red indicates large amounts.
An international team of scientists, including Brown University geologist John Mustard, has created the most comprehensive mineral record of Mars to date. Using data from the European Space Agency’s Mars Express mission, the record shows three distinct geological eras on the Red Planet, with the earliest marked by the presence of water. Results are published in Science.
Mars started out relatively wet and temperate, underwent a major climate shift, and evolved into a cold, dry place strewn with acidic rock – less than ideal conditions for supporting life.
This is the finding of an international team of scientists who have created the most comprehensive mineral history of Mars, a history closely linked to the presence of liquid water on the planet. According to the mineral record, created with Mars Express mission data and detailed in Science, Mars would only have been hospitable to life in its infancy.
The team’s analysis led them to draw an intriguing conclusion: Liquid water didn’t make the Red Planet red. Instead, the team states, Mars most likely gets its glow from tiny grains of red hematite or possibly maghemite, both riddled with iron.
The Centre National d’Etudes Spatiales, Agenzia Spatiale Italiana and the Russian Space Agency funded the OMEGA instrument. In the United States, NASA supported OMEGA data analysis.
Wendy Lawton | EurekAlert!
Ice cave in Transylvania yields window into region's past
28.04.2017 | National Science Foundation
Citizen science campaign to aid disaster response
28.04.2017 | International Institute for Applied Systems Analysis (IIASA)
More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.
Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...
Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.
"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...
The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.
Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...
The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...
Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.
Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...
28.04.2017 | Event News
20.04.2017 | Event News
18.04.2017 | Event News
28.04.2017 | Medical Engineering
28.04.2017 | Earth Sciences
28.04.2017 | Life Sciences