Images by Date
Images by Category
Solar System
Stars
White Dwarfs
Supernovas
Neutron Stars
Black Holes
Milky Way Galaxy
Normal Galaxies
Quasars
Galaxy Clusters
Cosmology/Deep Field
Miscellaneous
Images by Interest
Space Scoop for Kids
Multiwavelength
Sky Map
Constellations
3D Wall
Photo Blog
Top Rated Images
Image Handouts
Desktops
High Res Prints
Fits Files
Image Tutorials
Photo Album Tutorial
False Color
Cosmic Distance
Look-Back Time
Scale & Distance
Angular Measurement
Images & Processing
AVM/Metadata
Getting Hard Copies
Image Use Policy
Web Shortcuts
Chandra Blog
RSS Feed
Chandra Mobile
Chronicle
Email Newsletter
News & Noteworthy
Image Use Policy
Questions & Answers
Glossary of Terms
Download Guide
Get Adobe Reader
Chandra Zoom: Cygnus X-1

Zoom into the image of Cygnus X-1 and see all it's details up close and personal. Use the slider bar to zoom in close or zoom out and see the bigger picture.

Zoom into the image
Cygnus X-1
About a decade after its discovery in 1964, a combination of X-ray and optical observations led to the conclusion that Cygnus X-1 was a black hole - the first such identification. The Cygnus X-1 system consists of a black hole with a mass about 10 times that of the Sun in a close orbit with a blue supergiant star with a mass of about 20 Suns. Because of its brightness and close proximity, Cygnus X-1 continues to attract the interest of scientists seeking to understand the nature of black holes and how they affect their environment.

View Page   |   View Handout