An overview of the Chandra mission and goals, Chandra's namesake, top 10 facts.
Classroom activities, printable materials, interactive games & more.
Overview of X-ray Astronomy and X-ray sources: black holes to galaxy clusters.
All Chandra images released to the public listed by date & by category
Current Chandra press releases, status reports, interviews & biographies.
A collection of multimedia, illustrations & animations, a glossary, FAQ & more.
A collection of illustrations, animations and video.
Chandra discoveries in an audio/video format.
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.

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.
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