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)

Sgr A* jet in 60 Seconds

Narrator (April Hobart, CXC) Jets of high-energy particles are found throughout the Universe on large and small scales. They are produced by young stars and by giant black holes. Jets play important roles in transporting energy away from the central object and, on a galactic scale, in regulating the rate of formation of new stars.

Because of that, astronomers have been searching for decades for a jet from the Milky Way's black hole known as Sagittarius A*. Over the years, there have been several reports of hints of a jet from Sgr A*, but none was conclusive. A new study involving data from NASA's Chandra X-ray Observatory and the Very Large Array, however, has provided the best case yet for a jet from our Galaxy's supermassive black hole.

One piece of evidence is a straight line of X-rays that points to Sgr A*. Another is the discovery of a shock front - akin to a sonic boom - seen in radio data, where the jet appears to be striking a cloud of gas. By combining these clues with other information, astronomers think they have the strongest evidence to date for a jet blasting out of Sgr A*. The likely discovery of a jet from Sgr A* helps astronomers learn more about the giant black hole, including how it is spinning.