By Definition
High Definition
Standard Definition
4K UHD
By Length
Full (4-12 min)
Short (1-4 min)
By Date
2020 | 2019 | 2018 | 2017
2016 | 2015 | 2014 | 2013
2012 | 2011 | 2010 | 2009
2008 | 2007 | 2006
By Category
Solar System
Stars
White Dwarfs
Supernovas
Neutron Stars
Black Holes
Milky Way Galaxy
Normal Galaxies
Quasars
Groups of Galaxies
Cosmology/Deep Field
Miscellaneous
HTE
STOP
Space Scoop for Kids!
Chandra Sketches
Light
AstrOlympics
Quick Look
Subscribe
How To
Apple iTunes
RSS Reader
Audio-only format podcast
Web Shortcuts
Chandra Blog
RSS Feed
Chronicle
Email Newsletter
News & Noteworthy
Image Use Policy
Questions & Answers
Glossary of Terms
Download Guide
Get Adobe Reader
Recent Podcast
A Quick Look at a Star Survives Close Call with a Black Hole
A Quick Look at a Star Survives Close Call with a Black Hole
Astronomers may have discovered a new kind of survival story: a star that had a brush with a giant black hole and lived to tell the tale through exclamations of X-rays. (2020-04-23)


PKS 0745 in 60 Seconds

View/Listen
Narrator (April Hobart, CXC): Some of the biggest black holes in the Universe may actually be even bigger than previously thought. This is according to a new survey of 18 of the largest known black holes using data from the Chandra X-ray Observatory and other telescopes. A group of astronomers studied black holes found in the centers of galaxy clusters that are filled with hot gas. They came up with the new estimates of the black hole masses by looking at the amount of X-rays and radio waves they generate. The researchers found that the black holes in the survey may be about ten times more massive than previously thought. This includes at least ten that could weigh between 10 and 40 billion times the mass of the sun, making them "ultramassive" black holes.

Return to Podcasts