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
More Information
X-ray Astronomy Field Guide: Cosmology/Deep Fields/X-ray Background
Chandra Images by Category: Cosmology/Deep Fields/X-ray Background

-The sky as observed in X-rays is not dark, but gives off a glow thought to be from many distant sources. Deep surveys with the Chandra X-ray Observatory should reveal the cause of this glow.

14 Mar 12
A cluster of galaxies located about 2.3 billion light years from Earth.
15 Jun 11
A composite image combines the deepest X-ray image with optical and infrared data.
30 Aug 10
A composite image of the northern part of Abell 1758, located about 3.2 billion light years from Earth.
21 Jul 10
A galaxy harboring a giant black hole about 780 million light years away.
24 Jun 09
Giant reservoirs of hydrogen gas about 10 billion light years away.
28 May 09
A supermassive black hole in a distant galaxy, about 10 billion light years away.
16 Dec 08
A galaxy cluster located about 740 million light years from Earth.
11 Sep 08
A massive cluster of galaxies located about 2.3 billion light years away.
25 Oct 07
A compilation of long observations on the same patch of sky.
12 Mar 07
This panorama is the largest contiguous field ever obtained by the Chandra X-ray Observatory.
08 Aug 06
A galaxy cluster about 4.5 billion light years away.
08 Aug 06
A galaxy cluster about 2.2 billion light years away.
08 Aug 06
A galaxy cluster about 2.6 billion light years away.
08 Aug 06
A galaxy cluster about 3.5 billion light years away.
08 Aug 06
A galaxy cluster about 2.1 billion light years away.
08 Aug 06
A galaxy cluster about 1.4 billion light years away.
23 May 05
X-rays from iron atoms near supermassive black holes in the Chandra Deep Fields.
06 Apr 05
Merging submillimeter galaxies.
15 Feb 05
A region of the sky with a minimum of light-absorbing gas.
02 Feb 05
X-ray spectrum from a quasar located 400 million light years from Earth.
01 Jun 04
Supermassive black hole in a young galaxy billions of light years from Earth.
01 Jun 04
Supermassive black hole in a young galaxy billions of light years from Earth.
19 Jun 03
The Chandra Deep Fields cover two separate regions in the North and South.
19 Jun 03
The Chandra Deep Fields cover two separate regions in the North and South.
25 Mar 03
Chandra Sees Shape of Universe During Formative, Adolescent Years
31 Jul 02
This artist's conception depicts a huge cloud of hot gas 800 million light years from Earth.
13 Mar 01
A view of one of the most intensively studied patches of the night sky.
13 Mar 01
This image shows that gigantic black holes were much more active in the past than the present.
17 May 00
X-ray sources in the Hubble Deep Field North.
13 Jan 00
Chandra Image of Deep Field in Canes Venatici