New technology tracks tiniest pollutants in real time

Researchers may soon have a better idea of how tiny particles of pollution are formed in the atmosphere. These particles, called aerosols, or particulate matter (PM), are hazardous to human health and contribute to climate ...

Coronal mass ejections at Mars

Looking across the Mars landscape presents a bleak image: a barren, dry rocky view as far as the eye can see. But scientists think the vista might once have been quite different. It may have teemed with water and even been ...

How the sun caused an aurora this week

On the evening of Aug. 20, 2014, the International Space Station was flying past North America when it flew over the dazzling, green blue lights of an aurora. On board, astronaut Reid Wiseman captured this image of the aurora, ...

SDO spots a summer solar flare

The sun emitted a mid-level solar flare, peaking at 12:20 p.m. EDT on July 8, 2014, and NASA's Solar Dynamics Observatory captured images of the event. Solar flares are powerful bursts of radiation. Harmful radiation from ...

Mid-level solar flare seen by NASA's SDO

The sun emitted a mid-level solar flare, peaking at 6:34 p.m. EDT on March 12, 2014, and NASA's Solar Dynamics Observatory, or SDO, captured an image of it. Solar flares are powerful bursts of radiation. Harmful radiation ...

Image: Antares and sunspots at sunrise

An Orbital Sciences Corporation Antares rocket is seen on the launch pad at NASA's Wallops Flight Facility, Wallops Island, Va., on Jan. 8, 2014. Dark blemishes can be clearly seen on the face of the sun.  

'Accelerator on a chip' demonstrated

In an advance that could dramatically shrink particle accelerators for science and medicine, researchers used a laser to accelerate electrons at a rate 10 times higher than conventional technology in a nanostructured glass ...

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