How Stony-Iron Meteorites form

View into the SAPHiR multi-anvil press at the FRM II.
View into the SAPHiR multi-anvil press at the FRM II.Image: W. Schürmann / TUM

SAPHiR multi-anvil press solves mystery of the solar system. Meteorites give us insight into the early development of the solar system. Using the SAPHiR instrument at the Research Neutron Source Heinz Maier-Leibnitz (FRM II) at the Technical University of Munich (TUM), a scientific team has for the first time simulated the formation of a class of stony-iron meteorites, so-called pallasites, on a purely experimental basis.

“Pallasites are the optically most beautiful and unusual meteorites,” says Dr. Nicolas Walte, the first author of the study, in an enthusiastic voice. They belong to the group of stony-iron meteorites and comprise green olivine crystals embedded in nickel and iron...

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A new way to Target Cancers using ‘Synthetic Lethality’

Three dimensional culture of human breast cancer cells.
Photo credit: NCI Center for Cancer Research.

Approach exploits tumor weaknesses when 2 genetic defects are combined. Researchers report that inhibiting a key enzyme caused human cancer cells associated with two major types of breast and ovarian cancer to die and in mouse studies reduced tumor growth.

With advances in genome sequencing, cancer treatments have increasingly sought to leverage the idea of “synthetic lethality,” exploiting cancer-specific genetic defects to identify targets that are uniquely essential to the survival of cancer cells.

Synthetic lethality results when non-lethal mutations in different genes become deadly when combined in cells.

The research team, led by senior study author Richard D...

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Metal-breathing Bacteria could transform Electronics, Biosensors, and more

Study of bacterium links biology, materials science, and electrical engineering. When the Shewanella oneidensis bacterium “breathes” in certain metal and sulfur compounds anaerobically, it produces materials that could be used to enhance electronics, electrochemical energy storage, and drug-delivery devices.

The ability of this bacterium to produce molybdenum disulfide – a material that is able to transfer electrons easily, like graphene – is the focus of research published in Biointerphases by a team of engineers from Rensselaer Polytechnic Institute.

“This has some serious potential if we can understand this process and control aspects of how the bacteria are making these and other materials,” said Shayla Sawyer, an associate professor of electrical, computer, and systems ...

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Astrophysicist investigates the possibility of Life below the surface of Mars

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Although no life has been detected on the Martian surface, a new study from astrophysicist and research scientist at the Center for Space Science at NYU Abu Dhabi, Dimitra Atri finds that conditions below the surface could potentially support it. The subsurface – which is less harsh and has traces of water – has never been explored. According to Atri, the steady bombardment of penetrating Galactic Cosmic Rays (GCRs) might provide the energy needed to catalyze organic activity there.

Atri’s findings are reported in the study Investigating the biological potential of galactic cosmic ray-induced radiation-driven chemical disequilibrium in the Martian subsurface environment in the journal Scientific Reports, Springer Nature.

There is growing evidence suggesting the presence of an aq...

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