Wednesday, July 31, 2013

NASA's Chandra sees eclipsing planet in X-rays for first time

[unable to retrieve full-text content]For the first time since exoplanets, or planets around stars other than the sun, were discovered almost 20 years ago, X-ray observations have detected an exoplanet passing in front of its parent star. An advantageous alignment of a planet and its parent star in the system HD 189733, which is 63 light-years from Earth, enabled NASA's Chandra X-ray Observatory and the European Space Agency's XMM Newton Observatory to observe a dip in X-ray intensity as the planet transited the star.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/top_news/top_science/~3/xkuJ_0zbhMU/130729161610.htm

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