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
Chandra Mobile
Desktop Images
The Big Chandra Picture
High Res Prints
Presentations
Handouts
Screen Savers
Audio
Web Shortcuts
Chandra Blog
RSS Feed
Chandra Mobile
Chronicle
Email Newsletter
News & Noteworthy
Image Use Policy
Questions & Answers
Glossary of Terms
Download Guide
Get Adobe Reader
Q&A: Black Holes

Q:
Is it possible for a black hole to "eat" an entire galaxy? If so, what about the 1% mass rule? It would seem at some point the universe would be nothing but black holes, thereby after succumbing to evaporation

A:
We cannot think of a scenario where a black hole would eat an entire galaxy. The gravitational reach of supermassive black holes contained in the middle of galaxies is large, but not nearly large enough for this task. Also, gravity by itself isn't enough. For example, if the Sun suddenly turned into a black hole of the same mass, we'd continue to orbit it without being pulled in. Of course, this wouldn't be good for life on Earth!

Back| Index | Next