Resources
Q & A
Glossary
Acronym Guide
Further Reading
Outside the Site
Google Sky
WWT
Facebook
Youtube
Twitter
Flickr
Pinterest
Multimedia, Etc
Images/Illustrations
Animation & Video
Special Features
Chandra Podcasts
Desktop Images
The Big Chandra Picture
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: Galaxies, Galaxy Clusters, AGN, and Quasars

Q:
If the Sun is moving through the galaxy at several hundred kilometers/sec. and the galaxy is also moving at about the same speed through the universe, could we send a spacecraft to a particular location "behind" us by causing it stand still with reference to the movement of the sun and the galaxy? Could we actually "stop" a spacecraft?

A:
In principle it would be possible to "stop" a spacecraft with respect to our galaxy, or other galaxies, by sending it in the opposite direction from the motion of the Sun or the galaxy.

Back | Index | Next