Imagine the Universe!

The rotational speed of the spacecraft is gradually reduced over several days after lift-off and the rotational axis was changed to achieve the most stable configuration of the spacecraft five days after lift-off. Deployment of solar cell paddles adds Sun acquisition control. The X-ray telescope was extended ten days after lift-off on March 2nd, and performance verification of observational instruments started.

Artist concept of spacecraft, starting with spin-down, momentum axis change, solar paddle deployment, and X-ray telescope extension.

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