News tagged with reflection

Asteroid zips by Orion nebula

(Phys.org) —This image shows the potentially hazardous near-Earth object 1998 KN3 as it zips past a cloud of dense gas and dust near the Orion nebula. NEOWISE, the asteroid-hunting portion of the Wide-field ...

Aug 26, 2013
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Scientists relate urban population to air pollution

(Phys.org) —Live in a large city like New York, London, Beijing or Mumbai, and you are likely exposed to more air pollution than people in smaller cities in surrounding areas. But exactly how a city's pollution ...

Aug 19, 2013
4.5 / 5 (2) 1 | with audio podcast

Quasar observed in six separate light reflections

(Phys.org) —Quasars are active black holes—primarily from the early universe. Using a special method where you observe light that has been bent by gravity on its way through the universe, a group of physics ...

Aug 07, 2013
5 / 5 (10) 61 | with audio podcast

How does hydrogen metallize?

Hydrogen is deceptively simple. It has only a single electron per atom, but it powers the sun and forms the majority of the observed universe. As such, it is naturally exposed to the entire range of pressures ...

Jul 29, 2013
5 / 5 (8) 1 | with audio podcast

Gravity waves and sunglint, lake superior

From the vantage point of the International Space Station, astronauts frequently observe atmospheric and surface phenomena in ways that are impossible to view from the ground. Two such phenomena—gravity ...

Jul 23, 2013
3.5 / 5 (2) 0 | with audio podcast

Image: Fires in Central America

On April 11, 2013, the Moderate Resolution Imaging Spectroradiometer (MODIS) aboard NASA's Aqua satellite passed over Mexico and Central America, and acquired this true-color image of dozens of fires burning ...

Apr 12, 2013
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Image: Fires in the Yucatan Peninsula

Dozens of red hot spots cluster at the tip of Mexico's Yucatan Peninsula. To the south, fires also speckle the neck of the Yucatan, Guatemala, and Belize. Each hot spot, which appears as a red mark, is an ...

Apr 11, 2013
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