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Black hole with disc and jets

A color-coded image of major ice types on Lake Superior, made from a RADARSAT1 radar backscatter image using a new NASA and NOAA-developed technique.

A plasma wave can give rise to a population of suprathermal electrons.

Combined observations from NASA's Spitzer Space Telescope and the newly completed Atacama Large Millimeter/submillimeter Array (ALMA) in Chile have revealed the throes of stellar birth, as never before, in the well-studied object known as HH 46/47.

On July 19, 2013, in an event celebrated the world over, NASA's Cassini spacecraft slipped into Saturn's shadow and turned to image the planet, seven of its moons, its inner rings -- and, in the background, our home planet, Earth.

Zooming in on the Geobacter-Gonorrhea composite shows how the aromatic residues (teal balloon-like structures) bulge from the surface of pilin proteins (variously colored helical structures) within the fiber.

In this display showing optical imaging and spectroscopy of an individual nanotube on substrates and in devices, (a–c) are schematics of a nanotube on a fused-silica substrate, in a field-effect transistor device with two gold electrodes, and under an alumina dielectric layer; (d–f) are SEM images and (g-i) are direct optical images of these individual nanotubes.

Microsoft, Google and Facebook managers denied giving the NSA or any government in the world direct or unfettered access to their servers, at the ninth NSA inquiry hearing on the mass surveillance of EU citizens held at Parliament on Monday. US Congressman Jim Sensenbrenner told MEPs that abuses by the NSA were carried out outside congressional authority.

NASA's Solar Dynamics Observatory captured this image of the sun showing an X1.1 class flare that peaked at 11:26 p.m. EST on Nov. 7, 2013. Increased numbers of flares are quite common at the moment as the sun's normal 11-year activity cycle is ramping up toward solar maximum conditions.