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 Zoom: Abell 85

Zoom into the image of Abell 85 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.

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Abell 85
This composite image of Abell 85 is made from X-rays from NASA's Chandra X-ray Observatory and optical light from the Sloan Digital Sky Survey. This galaxy cluster is one of 86 observed with Chandra to trace how dark energy has stifled the growth of these massive structures over the last 7 billion years. Galaxy clusters are the largest collapsed objects in the Universe and are ideal for studying the properties of dark energy across the Universe.

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