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Topic: Chandra X-Ray Observatory

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In Pictures: Where stars form

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Black hole produces 'cosmic Category 5 hurricane'

A stellar-mass black hole, which is born when an extremely massive star collapses, typically contains about five to 10 times the mass of our sun.
Humongous 'El Gordo' galaxy cluster packs mass of 2 quadrillion stars

Located some7 billion light-years from Earth, 'El Gordo' is the biggest and hottest cluster of galaxies ever observed in the early universe.
In Pictures: Where stars form
Discoveries
New European space telescope opens a sharp eye on the sky

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Next week's Wisconsin recall: a test drive of themes for Election 2012

Wisconsin recall election between Gov. Scott Walker (R) and Tom Barrett (D) enters its last furious week. It is a proving ground for the themes and players of the national election in November, analysts say.
Decoder Wire: Mitt Romney has won the nomination. What next?
10 voices for change in Saudi Arabia
Ambassador McFaul, driver of US-Russia 'reset,' becomes his own obstacle
Decoder Wire: Obama honors Presidential Medal of Freedom winners: Who's eligible? (+video)

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Mae Azango has gone undercover to report on female circumcision, a rite of the Sande society in Liberia that is performed on young girls.

Mae Azango exposed a secret ritual in Liberia, putting her life in danger

When journalist Mae Azango wrote about a secret women's circumcision ritual in Liberia, she received death threats.