18/03/2015

Iron rain fell on early Earth, new Z machine data supports

Researchers at Sandia National Laboratories' Z machine have helped untangle a long-standing mystery of astrophysics: why iron is found spattered throughout Earth's mantle, the roughly 2,000-mile thick region between Earth's ...

NASA's SDO sees two coronal holes

NASA's Solar Dynamics Observatory, or SDO, captured this solar image on March 16, 2015, which clearly shows two dark patches, known as coronal holes. The larger coronal hole of the two, near the southern pole, covers an estimated ...

Working with communities to keep drinking water safe

When we think about unsafe drinking water, our minds may leap to contaminated wells in developing nations or flood damage to sewage systems. It's easy to feel removed from these issues. Yet each year viruses, bacteria and ...

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