We have launched the new Spitzer website! Send feedback to outreach@ipac.caltech.edu. Find the old website at http://legacy.spitzer.caltech.edu.

"How can we see a black hole?" (Ask an Astronomer)

Ask an Astronomer Video • August 24th, 2006 • ask2006-002

If no light escapes from a black hole, how can we detect them? 'Ask an Astronomer' explains.