By Definition
High Definition
Standard Definition
By Length
Full (4-12 min)
Short (1-4 min)
By Date
2015 | 2014 | 2013 | 2012 |
2011 | 2010 | 2009 | 2008 |
2007 | 2006
By Category
Solar System
White Dwarfs
Neutron Stars
Black Holes
Milky Way Galaxy
Normal Galaxies
Groups of Galaxies
Cosmology/Deep Field
Space Scoop for Kids!
Chandra Sketches
How To
Apple iTunes
RSS Reader
Web Shortcuts
Chandra Blog
RSS Feed
Chandra Mobile
Email Newsletter
News & Noteworthy
Image Use Policy
Questions & Answers
Glossary of Terms
Download Guide
Get Adobe Reader
Recent Podcast
A Tour of SDSS J103842.59+484917.7
A Tour of SDSS J103842.59+484917.7
One hundred years ago this month, Albert Einstein published his theory of general relativity, one of the most important scientific achievements in the last century. (2015-11-24)

Video Podcasts: The Incredible Two-Inch Universe

Reflection Questions

You can use this 4-STEP SCALE MODEL to imagine some of the distances involved in NASA's explorations of the universe.
How likely do you think it is that there is life elsewhere in our galaxy? Intelligent life?

What challenges are there in trying to communicate with any potential life around other stars? In other galaxies?

Some people say they feel insignificant after understanding the scale of the universe; others say it makes them feel that life on Earth is special; still others feel amazement at the power of the human mind. What's your view?

Return to Podcasts