"UZ For," not "U2"...

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A team of astronomers, including Dr Gavin Ramsay of the Armagh Observatory, has found evidence that suggests the existence of an extraordinary planetary system. Two giant planets appear to be revolving at some distance around a compact, interacting stellar binary known as UZ For, which comprises two small stars orbiting very closely one about the other.

I find sidebar discussions amusing.

At umbrage was the term "degrees Kelvin" used in the article: "This stream of material collides with the surface of the white dwarf, where it is heated to millions of degrees Kelvin, flooding the entire planetary system with enormous amounts of deadly X-rays." The astute went to Wikipedia to deliver their counter, yet here in two reference places, namely http://sentence.yourdictionary.com/kelvin and http://dictionary.reference.com/browse/kelvin, I found (for example):

Science Dictionary

kelvin (kěl'vĭn) Pronunciation Key

The SI unit used to measure temperature, the basic unit of the Kelvin scale. A difference of one degree Kelvin corresponds to the same temperature difference as a difference of one degree Celsius. See Table at measurement. See also absolute zero.

I also found it referenced in my little undergraduate physics book on: thermodynamics.
Kelvin, First Baron. Title of William Thomson 1824-1907.

British mathematician and physicist known especially for his work on heat and electricity. In 1848 he proposed a scale of temperature independent of any physical substance, which became known as the Kelvin scale.

"With great power comes great responsibility." (Spiderman)

When using "the Google," try Boolean Operators in your search terms. Using the operator "wikipedia academic valid source" (in quotes), I found this on Wikipedia ABOUT Wikipedia: http://en.wikipedia.org/wiki/Wikipedia:Academic_use.

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PhysOrgDotCom: Astronomers find evidence for a strange new planetary system