Resources
Q & A
Glossary
Acronym Guide
Further Reading
Outside the Site
Google Sky
WWT
Facebook
Youtube
Vimeo
Twitter
Flickr
Pinterest
Multimedia, Etc
Images/Illustrations
Animation & Video
Special Features
Chandra Podcasts
Desktop Images
The Big Chandra Picture
High Res Prints
Presentations
Handouts
Screen Savers
Audio
Web Shortcuts
Chandra Blog
RSS Feed
Chronicle
Email Newsletter
News & Noteworthy
Image Use Policy
Questions & Answers
Glossary of Terms
Download Guide
Get Adobe Reader
Q&A: Black Holes

Q:
If light cannot escape black holes, how can we take pictures of them?

A:
You are correct that light can't escape a black hole. What we can see in astronomical images is light from material that is heated up when it gets close to a black hole. This material can glow very brightly, especially in ultraviolet light and X-rays.

Please see: http://chandra.harvard.edu/xray_sources/blackholes.html for more details.

Back | Index | Next