Scientists uncover origins of the Sun's swirling spicules

At any given moment, as many as 10 million wild jets of solar material burst from the sun's surface. They erupt as fast as 60 miles per second, and can reach lengths of 6,000 miles before collapsing. These are spicules, and ...

NASA's IRIS spacecraft is fully integrated

NASA's next Small Explorer (SMEX) mission to study the little-understood lower levels of the sun's atmosphere has been fully integrated and final testing is underway.

IRIS provides unprecedented images of sun

The region located between the surface of the sun and its atmosphere has been revealed as a more violent place than previously understood, according to images and data from NASA's newest solar observatory, the Interface Region ...

NASA IRIS: Improving our view of the sun

In late June 2013, NASA will launch a new set of eyes to offer the most detailed look ever of the sun's lower atmosphere, called the interface region. This region is believed to play a crucial role in powering the sun's dynamic ...

NASA's Sun-observing IRIS mission

While it seems static from our vantage point on Earth 93 million miles away, the sun is constantly changing. Under the influence of complex magnetic forces, material moves throughout the solar atmosphere and can burst forth ...

IRIS celebrates year two with ongoing scientific discoveries

On June 27, 2015, NASA's Interface Region Imaging Spectrograph, or IRIS, mission will celebrate its second year in space. IRIS observations have advanced our understanding of what role the interface region, which lies between ...

Sources of the solar wind

The solar chromosphere is the region between the Sun's surface and its hot, million-degree corona. Within this complex interface zone, only a few thousand kilometers deep, the density of the gas drops by a factor of about ...

page 1 from 2