Physics is full of big, interesting questions about phenomenon such as black holes. This illustration shows the supermassive black hole at the heart of the active galaxy NGC 3783 in the southern constellation of Centaurus.
A mentor can help bridge the gulf between having an interest in a subject and actually pursuing that interest through action. Above, a boy gazes up at an image of Albert Einstein on a wall in Tunis, Tunisia.
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The spiral galaxy known as NGC 3521 lies in the constellation of Leo, a mere 35 million light-years away. Now go flush and see if you understand the connection between the two.