Distant galaxies reveal the clearing of the cosmic fog

(PhysOrg.com) -- Scientists have used ESO's Very Large Telescope to probe the early Universe at several different times as it was becoming transparent to ultraviolet light. This brief but dramatic phase in cosmic history ...

Nanoscale nonlinear light source created

Not long after the development of the first laser in 1960 scientists discovered that shining a beam through certain crystals produced light of a different color; more specifically, it produced light of exactly twice the frequency ...

The making of dust

(PhysOrg.com) -- On the Earth, dust particles are everywhere - under beds, on bookshelves, even floating in the air. We take dust for granted. Dust is also common in space, and it is found for example in the cold, dark molecular ...

Experts: rare earths headed for 2011 supply crunch

Global demand for the increasingly important "rare earth" minerals that power a range of digital products could outstrip supply by next year as dominant producer China slashes exports, analysts warn.

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