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Using the supersharp radio “vision” of the National Science Foundation’s Very Long Baseline Array (VLBA), astronomers have made the first detection of orbital motion in a pair of supermassive black holes in a galaxy some 750 million light-years from Earth.

he International Space Station, as seen from space shuttle Atlantis in 2011.

(left) This is a picture of a front cone, a circular cone-shaped spectrometer component, taken from above. The 30 μm aperture created at the tip is the port where photoelectrons enter the spectrometer. (right) The peaks represent the photoelectron spectroscopic signals of gold thin film detected under atmospheric pressure of air.

The Pancam on NASA's Mars Exploration Rover Opportunity took the component images of this enhanced-color scene during the mission's "walkabout" survey of an area just above the top of "Perseverance Valley," in preparation for driving down the valley.

Single spins in silicon carbide absorb and emit single photons based on the state of their spin.

This is how AEGIS sees the Martian surface. All targets found by the A.I. program are outlined: blue targets are rejected, while red are retained. The top-ranked target is shaded green; if there's a second-ranked target, it's shaded orange. These NavCam images have been contrast-balanced.

3-D graphene foam objects are produced by shining a laser on a mixture of powdered sugar and nickel powder. The laser is moved back and forth to melt sugar in a 2-D pattern, and nickel acts as a catalyst to spur the growth of graphene foam. The process is repeated with successive layers of powder to build up 3-D objects.

This is a schematic diagram of the europium doped gadolinium oxide nanorods and the silica coating to improve the biocompatibility. Invitro cytotoxicity analysis, invitro magnetic resonance imaging and optical imaging of the prepared samples were carried out.

The feature that appears bright blue at the center of this scene is NASA's Curiosity Mars rover amid tan rocks and dark sand on Mount Sharp, as viewed by the HiRISE camera on NASA's Mars Reconnaissance Orbiter on June 5, 2017.

The suggested mechanism of photocatalytic oxidization of EM over Cu2O@H2Ti3O7 nanocomposite under sunlight irradiation. Under the sunlight irradiation, photo-generated electrons (e?) of nanocomposite aggregated on nanotubes, and holes (h?) aggregated on Cu2O nanoparticles, which will reduce the bandgap energy and prolong the effective separation of photo-induced electron-hole pairs, enhance eventually the photocatalytic activity. It causes a large number of the hydroxy radical groups (·OH) generated on nanocomposite, which will effectively oxidize EM due to the synergistic effect between them to form heterojunction structure. Therefore, nanocomposite exhibits the excellent photocatalytic performance.