By Definition
High Definition
Standard Definition
By Length
Full (4-12 min)
Short (1-4 min)
By Date
2017 | 2016 | 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
Quick Look
How To
Apple iTunes
RSS Reader
Web Shortcuts
Chandra Blog
RSS Feed
Email Newsletter
News & Noteworthy
Image Use Policy
Questions & Answers
Glossary of Terms
Download Guide
Get Adobe Reader
Recent Podcast
A Quick Look at Cassiopeia A Elements
A Quick Look at Cassiopeia A Elements
Where do most of the elements essential for life on Earth come from? The answer: inside the furnaces of stars and the explosions that mark the end of some stars’ lives. (2017-12-13)

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