By Definition
High Definition
Standard Definition
By Length
Full (4-12 min)
Short (1-4 min)
By Date
2018 | 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 the Crab Nebula
A Quick Look at the Crab Nebula
A new composite image of the Crab Nebula features X-rays from Chandra, optical data from Hubble, and infrared data from Spitzer. (2018-03-14)

Tycho's Supernova Remnant in 60 Seconds

Narrator (April Hobart, CXC): New research using Chandra data of the Tycho supernova remnant provides astronomers with clues to what triggered the original supernova explosion. Tycho was formed by a so-called Type Ia supernova. Scientists use this category of supernovas to measure large distances across the Universe because it is believed they are consistently bright when they explode. But what causes the explosion? This is still a debate. This new Chandra result, however, suggests that Tycho went off when a white dwarf pulled too much material from a companion star and exploded. This evidence comes from a small arc of X-ray emission that was found in the Chandra image. This arc is, in fact, due to a shock wave created when the white dwarf exploded and blew material off the surface of the nearby star. Understanding exactly how and why Type Ia supernovas explode is useful because they are an important type of object for investigating dark energy in the Universe.

Return to Podcasts