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
Tour of Phoenix Cluster
Tour of Phoenix Cluster
This galaxy cluster, which was found about 5.7 billion light years from Earth, shattered several important astronomical records. (2015-10-01)

Cassiopeia A in 60 Seconds

Narrator (April Hobart, CXC): A new discovery from a famous exploded star has provided the first evidence for a bizarre state of matter in its core. The news comes from the studies of Cassiopeia A, the remains of a massive star that was seen exploding in Earths sky over 300 years ago. A sequence of observations from NASAs Chandra X-ray Observatory over the past decade shows that the ultradense core of the star left behind after the explosion known as a neutron star has cooled by about 4%. This information, along with theoretical work, indicates that the neutron star contains a mysterious state of matter known as a superfluid. This research will help scientists better understand nuclear interactions in matter at the highest densities known anywhere either here on Earth or out in space.

Return to Podcasts