News tagged with atoms

A new chapter in Earth history

An international group of scientists has proposed that fallout from hundreds of nuclear weapons tests in the late 1940s to early 1960s could be used to mark the dawn of a new geological age in Earth history – the Anthropocene.

dateMay 11, 2015 in Earth Sciences
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Deep space atomic clock

As the saying goes, timing is everything. More so in 21st-century space exploration where navigating spacecraft precisely to far-flung destinations—say, to Mars or even more distant Europa, a moon of Jupiter—is critical.

dateApr 29, 2015 in Space Exploration
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How iron feels the heat

As you heat up a piece of iron, the arrangement of the iron atoms changes several times before melting. This unusual behavior is one reason why steel, in which iron plays a starring role, is so sturdy and ubiquitous in everything ...

dateFeb 13, 2015 in Condensed Matter
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