ScienceDaily: Top Science News |
- Hadley Crater provides deep insight into Martian geology
- Genome of malaria-causing parasite sequenced: Even when on different continents, organism features same mutations
- Weapon-wielding marine microbes may protect populations from foes
- Quantum world only partially melts: Ultracold atoms reveal surprising new quantum effects
- Mars's dramatic climate variations are driven by the Sun
- Chikyu sets a new world drilling-depth record of scientific ocean drilling
- Mathematicians offer unified theory of dark matter, dark energy, altering Einstein field equations
- Deep-sea crabs grab grub using UV vision: Some crabs on the sea floor can see UV light and use the ability to select healthy food
- In quest of the cosmic origins of silver: Silver and gold materialized in different stellar explosions
| Hadley Crater provides deep insight into Martian geology Posted: 06 Sep 2012 04:14 PM PDT Recently engaged in providing support to the successful landing of NASA's Mars Science Laboratory's Curiosity rover, ESA's Mars Express has now returned to its primary mission of studying the diverse geology and atmosphere of the 'Red Planet' from orbit. Earlier this year, the spacecraft observed the 120 km wide Hadley Crater, providing a tantalizing insight into the martian crust. The images show multiple subsequent impacts within the main crater wall, reaching depths of up to 2600 m below the surrounding surface.  |
| Posted: 06 Sep 2012 03:19 PM PDT Scientists have discovered that the parasite that causes the most common form of malaria share the same genetic variations -- even when the organisms are separated across continents. The discovery raises concerns that mutations to resist existing medications could spread worldwide, making global eradication efforts even more difficult.  |
| Weapon-wielding marine microbes may protect populations from foes Posted: 06 Sep 2012 11:48 AM PDT Researchers have recently found evidence that some ocean microbes wield chemical weapons that are harmless to close relatives within their own population, but deadly to outsiders.  |
| Quantum world only partially melts: Ultracold atoms reveal surprising new quantum effects Posted: 06 Sep 2012 11:18 AM PDT Scientists are investigating the transition of quantum systems as they approach thermal equilibrium. Scientists have now detected an astonishingly stable intermediate state between order and disorder.  |
| Mars's dramatic climate variations are driven by the Sun Posted: 06 Sep 2012 08:26 AM PDT On Mars's poles there are ice caps of ice and dust with layers that reflect to past climate variations on Mars. Researchers from the Niels Bohr Institute have related the layers in the ice cap on Mars's north pole to variations in solar insolation, thus established the first dated climate history for Mars, where ice and dust accumulation has been driven by variations in insolation.  |
| Chikyu sets a new world drilling-depth record of scientific ocean drilling Posted: 06 Sep 2012 08:22 AM PDT Scientific deep sea drilling vessel Chikyu sets a world new record by drilling down and obtains rock samples from deeper than 2,111 meters below the seafloor off Shimokita Peninsula of Japan in the northwest Pacific Ocean.  |
| Mathematicians offer unified theory of dark matter, dark energy, altering Einstein field equations Posted: 06 Sep 2012 06:20 AM PDT A pair of mathematicians have proposed a unified theory of dark matter and dark energy that alters Einstein's equations describing the fundamentals of gravity. They suggest the law of energy and momentum conservation in spacetime is valid only when normal matter, dark matter and dark energy are all taken into account. For normal matter alone, energy and momentum are no longer conserved, they argue.  |
| Posted: 06 Sep 2012 04:42 AM PDT Crabs living half-a-mile down in the ocean, beyond the reach of sunlight, have a sort of color vision combining sensitivity to blue and ultraviolet light. Their detection of shorter wavelengths may give the crabs a way to ensure they grab food, not poison.  |
| Posted: 06 Sep 2012 04:40 AM PDT In the quest for the cosmic origins of heavy elements, a researcher has established that silver can only have materialized during the explosion of clearly defined types of star. These are different from the kind of stars producing gold when they explode. The evidence for this comes from the measurement of various high-mass stars with the help of which the stepwise evolution of the components of all matter can be reconstructed.  |
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