skip to content
 
Goddard Space Flight Center   What's New
  Site Map
HOME Science Special Exhibit Satellites and Data Teachers' Corner
Imagine the Universe!
Ask a High Energy Astronomer Dictionary Resources
Imagine Home | Science | Advanced Science | 

Active Galaxies Quiz

  1. What kind of object is believed to be in the center of an active galaxy?


  2. What features did Carl Seyfert observe in NGC 4151?



  3. It is possible to have a 109 solar-mass black hole.


  4. What produces the phenomena observed in AGN?


  5. What is the source of many of the apparent differences in the types of AGN we observe?


Home Imagine Science Special Exhibit Satellites and Data
Dictionary Resources Teachers' Corner Ask a High Energy Astronomer

Imagine the Universe is a service of the High Energy Astrophysics Science Archive Research Center (HEASARC), Dr. Nicholas White (Director), within the Laboratory for High Energy Astrophysics at NASA's Goddard Space Flight Center.

The Imagine Team
Project Leader: Dr. Jim Lochner
All material on this site has been created and updated between 1997-2004.

Useful plugins

NASA's privacy statement

Do you have a comment or question about this CD-ROM? Please send e-mail to itu@athena.gsfc.nasa.gov.

External links contain material that we found to be relevant. However they're not maintained by us and the content may have changed. If you find any external links that contain inappropriate material, please let us know by sending an e-mail to itu@athena.gsfc.nasa.gov.

CD Table of Contents