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This color composite view combines violet, green, and infrared images of Jupiter's intriguing moon, Europa, for a view of the moon in natural color (left) and in enhanced color designed to bring out subtle color differences in the surface (right). The bright white and bluish part of Europa's surface is composed mostly of water ice, with very few non-ice materials. In contrast, the brownish mottled regions on the right side of the image may be covered by hydrated salts and an unknown red component. The yellowish mottled terrain on the left side of the image is caused by some other unknown component. Long, dark lines are fractures in the crust, some of which are more than 3,000 kilometers (1,850 miles) long.

(Left) Schematic illustration of the design concept for self-assembling drug amphiphiles. The drug loading within the self-assembled nanostructures is defined by the nature of molecular design. (Right) TEM image of nanotubes formed by self-assembly of a drug amphiphile containing four camptothecin drugs. These nanotubes possess a fixed drug loading of 38% (w/w).

This is a Hubble Space Telescope view of supernova SN UDS10Wil, nicknamed SN Wilson that exploded over 10 billion years ago. The small box in the top image pinpoints SN Wilson's host galaxy in the CANDELS survey. The image is a blend of visible and near-infrared light. The three bottom images, taken in near-infrared light demonstrate how the astronomers found the supernova. The image at far left shows the host galaxy without SN Wilson. The middle image, taken a year earlier, reveals the galaxy with SN Wilson. The supernova cannot be seen because it is too close to the center of its host galaxy. To detect the supernova, astronomers subtracted the left image from the middle image to see the light from SN Wilson, shown in the image at far right.

Artistic view:Water easily evaporates through graphene oxide membranes but they represent an impermeable barrier for other molecules.

Oak Ridge National Laboratory researchers used electron microscopy to document the 'dancing' motions of silicon atoms, pictured in white, in a graphene sheet.

Space Station after AMS-02 installation.

These are images of (a) normal human joint cartilage, and (e) cartilage with very early matrix GAG loss. (b) Histologic image of a normal cartilage stained with Toluidine Blue to visualize content of GAGs. (f) Histologic image of a GAG-depleted cartilage (c) Schematic of extracellular matrix of normal cartilage composed mainly of collagen fibers and aggrecan (g) Schematic of matrix of GAG-depleted cartilage (d,h) Schematic of AFM-based dynamic compression of normal (d) and GAG-depleted (h) cartilage, which results in intra-tissue fluid flow velocity depicted by the blue arrows (from Finite element model computer simulations): loss of GAG (h) enables more fluid to flow out of the cartilage at high loading rates. (i) Human aggrecan imaged by Atomic Force Microscopy (AFM)