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Martian gullies as seen in the top image from HiRISE on NASA's Mars Reconnaissance Orbiter resemble gullies on Earth that are carved by liquid water.

The top two rows show illustrations of crystals and solution structures of bacterial HU proteins with DNA represented by X-ray crystallography and small angle X-ray scattering, respectively. DNA strands are yellow and HU proteins are shades of blue. Soft X-ray tomography was used to visualize bacterial chromatin (in yellow) in wild type and invasive E. coli cells, shown in the bottom row.

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TESS will look at the nearest, brightest stars to find planetary candidates that scientists will observe for years to come.

Scientists with NASA's Dawn mission were surprised to find that Ceres has no clear signs of truly giant impact basins. This image shows both visible (left) and topographic (right) mapping data from Dawn.

A new ORNL study, a new gas exfoliation process that yields a 20 percent increase in surface area per nanosheet of boron nitride.

In a new concept for battery cathodes, nanometer-scale particles made of lithium and oxygen compounds (depicted in red and white) are embedded in a sponge-like lattice (yellow) of cobalt oxide, which keeps them stable. The researchers propose that the material could be packaged in batteries that are very similar to conventional sealed batteries yet provide much more energy for their weight.

Researchers used data from NASA's Wide-field Infrared Survey Explorer (WISE) mission to highlight the X-shaped structure in the bulge of the Milky Way

NASA's Curiosity Mars rover autonomously selects some targets for the laser and telescopic camera of its ChemCam instrument. For example, on-board software analyzed the Navcam image at left, chose the target indicated with a yellow dot, and pointed ChemCam for laser shots and the image at right.

Hybrids of two-dimensional materials like the graphene-molybdenum disulfide illustrated here have electronic properties that don't follow the same rules as their 3-D cousins, according to Rice University researchers. The limited direct contact between the two materials creates an electric field that greatly increases the size of the p/n junction.