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New Views Show Old NASA Mars Landers

By Guest PostFebruary 9, 2012Scienceball aerospace, bonneville crater, canadian space agency, color image, denver, earth, hirise camera, liquid water, lockheed martin space systems, mars, mars reconnaissance orbiter, martian arctic winter, martian soil particles, martian surface, meteorite, microscope, NASA, Phoenix, spacecraft, telescopic camera, three petal lander, university of arizona

The High Resolution Imaging Science Experiment (HiRISE) camera on NASA’s Mars Reconnaissance Orbiter recorded a scene on Jan. 29, 2012, that includes the first color image from orbit showing the three-petal lander of NASA’s Mars Exploration Rover Spirit mission. Spirit drove off that lander platform in January 2004 and spent most of its six-year working life in a range of hills about two miles to the east.

Another recent image from HiRISE, taken on Jan. 26, 2012, shows NASA’s Phoenix Mars Lander and its surroundings on far-northern Mars after that spacecraft’s second Martian arctic winter. Phoenix exceeded its planned mission life in 2008, ending its work as solar energy waned during approach of its first Mars winter. (more…)

Yale’s New Microscope Brings Atoms’ Identities into Focus

By Guest PostJanuary 15, 2012Education, Scienceatom scale materials, atomic level resolution, atomic resolution, atoms and molecules, carbon nanotubes, chemical composition, crystals, electron beams, electron energy, energy, gayatri keskar, lisa pfefferle, microscope, nanometers, nanoscience and quantum engineering, osirus chemistem model, paul fleury, quantum computing, semiconductors, state of the art microscope, steve girvin, sustainability research, tem, transmission electron microscope, width of a human hair, x ray detector, yinqe, yinqe laboratory

Yale’s acquisition of a powerful new transmission electron microscope (TEM) is expected to transform researchers’ ability to examine and manipulate atom-scale materials and devices on campus.

The approximately $2 million, state-of-the-art microscope offers atomic resolution for both physical structure and chemical composition, as well as significantly faster processing times than other devices on campus. It is the first unit of this specific TEM model acquired for university laboratory use. (more…)

When Plants Go Polyploid

By Guest PostSeptember 15, 2011Nature, Scienceanimal evolution, bananas, chromosomes, coffee, evolutionary biology, evolutionary gamble, genetic information, genome duplication, Israel, itay mayrose, karen magnuson ford, michael barker, microscope, peanuts, plant genomes, plant lineages, polyploid lineages, polyploidy, potatoes, sarah sally otto, shing h zhan, tel aviv university, tobacco

*Plant lineages with multiple copies of their genetic information face higher extinction rates than their relatives, researchers report in Science magazine.*

While duplication of hereditary information is a relatively rare event in animal evolution, it is common in plants. Potatoes, coffee, bananas, peanuts, tobacco, wheat, oats and strawberries, to name but a few, all carry multiple copies of their genetic material, in a condition called polyploidy.

In contrast, most animals including humans are diploid, meaning an individual carries only two copies of each chromosome, the carriers of genetic information, one from each parent. (more…)

Tag Archives: microscope

New Views Show Old NASA Mars Landers

Yale’s New Microscope Brings Atoms’ Identities into Focus

When Plants Go Polyploid