Imagine the Universe!
Imagine Home | Science | Advanced Science | 

Greater Collecting Area

The X-ray Multiple-Mirror Mission (XMM for short) required many mirrors, some with parabolic shapes and others with hyperbolic shapes. These mirrors were layered and placed on top of each other to help focus as many x-rays as possible. The large numbers of mirror and their size gave XMM the largest collecting area of any X-ray observatory ever built at the time of its launch in 1999.

Imagine the Universe is a service of the High Energy Astrophysics Science Archive Research Center (HEASARC), Dr. Alan Smale (Director), within the Astrophysics Science Division (ASD) at NASA's Goddard Space Flight Center.

The Imagine Team
Acting Project Leader: Dr. Barbara Mattson
All material on this site has been created and updated between 1997-2012.

DVD Table of Contents
Educator's Index