In a strange
At the center of
Called quasars,
To maintain
Using images
In 19 of them,
"We must therefore
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Quasars are relatively
While the
In the late
Instead of a
Adding to the
The combination
Such a collision
To explain the
Computer
It may be
Another way to test for the
The discovery is
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Ker Than is a science writer and children's book author who joined Space.com as a Staff Writer from 2005 to 2007. Ker covered astronomy and human spaceflight while at Space.com, including space shuttle launches, and has authored three science books for kids about earthquakes, stars and black holes. Ker's work has also appeared in National Geographic, Nature News, New Scientist and Sky & Telescope, among others. He earned a bachelor's degree in biology from UC Irvine and a master's degree in science journalism from New York University. Ker is currently the Director of Science Communications at Stanford University.