Science

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Legs for ROBONAUT 2!

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Brain tumor cells penetrated by tiny, degradable particles carrying genetic instructions: Work in mice advances potential for nanoparticles to treat brain cancer

Working together, Johns Hopkins biomedical engineers and neurosurgeons report that they have created tiny, biodegradable "nanoparticles" able to carry DNA to brain cancer cells in mice.

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Biodegradable plastic molecules (orange) self-assemble with DNA molecules (intertwined, black circles) to form tiny nanoparticles that can carry genes to cancer cells.

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Graphene only as strong as weakest link: Rice, Georgia Tech experiments determine real-world limits of two-dimensional carbon

There is no disputing graphene is strong. But new research by Rice University and the Georgia Institute of Technology should prompt manufacturers to look a little deeper as they consider the miracle material for applications.

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An electron microscope image shows a pre-crack in a suspended sheet of graphene used to measure the overall strength of the sheet in a test at Rice University. Rice and Georgia Tech scientists performed experiments and theoretical calculations and found that graphene, largely touted for its superior physical strength, is only as strong as its weakest point.

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Well-behaved, Young Galaxy Surprises Astronomers

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The young galaxy SDSS090122.37+181432.3, also known as S0901, is seen here as the bright arc to the left of the central bright galaxy.

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Target on Mars Looks Good for NASA Rover Drilling

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This two-step animation shows before and after views of a patch of sandstone scrubbed with the Dust Removal Tool, a wire-bristle brush, on NASA's Curiosity Mars rover. Both images were taken April 26, 2014, by the Mars Hand Lens Imager on Curiosity's arm. The target rock is called "Windjana."

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Stanford scientists create circuit board modeled on the human brain

Stanford scientists have developed faster, more energy-efficient microchips based on the human brain - 9,000 times faster and using significantly less power than a typical PC. This offers greater possibilities for advances in robotics and a new way of understanding the brain. For instance, a chip as fast and efficient as the human brain could drive prosthetic limbs with the speed and complexity of our own actions.

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The Neurogrid circuit board can simulate orders of magnitude more neurons and synapses than other brain mimics on the power it takes to run a tablet computer.

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Fluorescent-based tool reveals how medical nanoparticles biodegrade in real time: May inform development of versatile drug carriers for therapeutic uses in patients

Nanoparticles have been heralded as a potential "disruptive technology" in biomedicine, a versatile platform that could supplant conventional technologies, both as drug delivery vehicles and diagnostic tools.

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Nanoparticle disassembly causes a shift in the fluorescence pattern.

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NASA Seeks External Concepts for Mission to Oceanic Jovian Moon

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This image shows two views of the trailing hemisphere of Jupiter's ice-covered satellite, Europa. The left image shows the approximate natural color appearance of Europa. The image on the right is a false-color composite version combining violet, green and infrared images to enhance color differences in the predominantly water-ice crust of Europa.

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NASA Puzzles Out Ozone's Ups and Downs

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Astronauts aboard the International Space Station captured this photograph of Earth's atmospheric layers on July 31, 2011, revealing the troposphere (orange-red) to the stratosphere and above. Earth-observing instruments in space allow scientists to better understand the chemistry and dynamics occurring within and between these layers.

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NASA's Spitzer and WISE Telescopes Find Close, Cold Neighbor of Sun

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This artist's conception shows the object named WISE J085510.83-071442.5, the coldest known brown dwarf. This cool star-like body is as frosty as the North Pole (or between minus 54 and 9 degrees Fahrenheit). It is also the fourth closest system to our sun, at 7.2 light-years from Earth.