Black Hole Lurks in Invisible Galaxy

Black Hole Lurks in Invisible Galaxy
This figure shows two Hubble images of quasars from a sample of 20 relatively nearby quasars. Quasar HE0450-2958 (left) appears to lack a host galaxy unlike HE1239-2426 (right), which resides inside a normal host galaxy that displays large spiral arms. (Image credit: Frédéric Courbin & Pierre Magain.)

In a strange

At the center of

Called quasars,

To maintain

Using images

In 19 of them,

"We must therefore

Quasars are relatively

While the

In the late

Instead of a

Adding to the

The combination

Such a collision

To explain the


It may be

Another way to test for the

The discovery is

Join our Space Forums to keep talking space on the latest missions, night sky and more! And if you have a news tip, correction or comment, let us know at:

Staff Writer

Ker Than is a science writer and children's book author who joined as a Staff Writer from 2005 to 2007. Ker covered astronomy and human spaceflight while at, 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.