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This artist's concept illustrates the frenzied activity at the core of our Milky Way galaxy. The galactic center hosts a supermassive black hole in the region known as Sagittarius A*, or Sgr A*, with a mass of about four million times that of our sun. The Herschel space observatory has made detailed observations of surprisingly hot gas that may be orbiting or falling toward the supermassive black hole.

After one hour and 19 minutes, there is no fog on the area of the visor where VitreOx has been applied.

An illustration of a single-stranded DNA homopolymer translocating through a silicon nitride nanopore.

The maps in this animation show how the sky looks at gamma-ray energies above 100 million electron volts (MeV) with a view centered on the north galactic pole. The first frame shows the sky during a three-hour interval prior to GRB 130427A. The second frame shows a three-hour interval starting 2.5 hours before the burst, and ending 30 minutes into the event. The Fermi team chose this interval to demonstrate how bright the burst was relative to the rest of the gamma-ray sky. This burst was bright enough that Fermi autonomously left its normal surveying mode to give the LAT instrument a better view, so the three-hour exposure following the burst does not cover the whole sky in the usual way.

Crown ether “cages” trap potassium ions but leave nanotubes with a repellant negative charge in solutions that will be valuable for forming very strong, highly conductive carbon nanotube fibers. The Rice University discovery appears in ACS Nano.

China, the world's largest producer of hydrochlorofluorocarbons (HCFC), received a US $95 million grant on April 23, 2013 to help reduce its production of HCFCs. These substances, used primarily in refrigeration and air-conditioning and in the manufacture of foam products, deplete the ozone layer and exacerbate climate change. The grant is from the Multilateral Fund for the Implementation of the Montreal Protocol on Substances that Deplete the Ozone Layer, which provides the funds in exchange for verified annual reductions of HCFC production levels.

This is an artist's concept of the Saturnian plasma sheet based on data from Cassini magnetospheric imaging instrument. It shows Saturn's embedded "ring current," an invisible ring of energetic ions trapped in the planet's magnetic field.

Crown ether “cages” trap potassium ions but leave nanotubes with a repellant negative charge in solutions that will be valuable for forming very strong, highly conductive carbon nanotube fibers. The Rice University discovery appears in ACS Nano.

The nano-network releases insulin in response to changes in blood sugar.