**RCW 86: A Super-Efficient Particle Accelerator
This image, created from data obtained from NASA's Chandra X-ray Observatory
and the European Southern Observatory's Very Large Telescope, shows a part
of the roughly circular supernova remnant known as RCW 86. This remnant of
an exploded star may be the one observed in 185 AD by Chinese astronomers.
By studying it, astronomers gained a better understanding of new details
about the role of supernova remnants as the Milky Way's super-efficient
particle accelerators.

 Read the article and send in your comments at:
http://chandra.harvard.edu/photo/2009/rcw86/

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**Celestial Fireworks:

Send your friends an animated ecard with Chandra's very own fireworks.
http://chandra.harvard.edu/greetings/

    **Chandra Blog:  Seamless Astronomy And Remote Collaborations

Pepi Fabbiano, senior astrophysicist: I am just back from the spring meeting
of the International Virtual Observatory Alliance (IVOA). The IVOA is an
international collaboration of astronomers and computer scientists aimed at
connecting via the internet archives of astronomical data world-wide. These
are observations of the sky both from the ground and space and include X-ray
data Chandra together with radio, optical, infrared and ultraviolet
observations. The purpose of the IVOA is to develop standards so that anyone
can retrieve data from the participant archives, publish their own
observations to the world, and make the data "play together" to discover new
aspects of the universe.
http://chandra.harvard.edu/blog/node/143

**Chandra Podcasts:  GRS 1915 in 60 Seconds
We start with an optical and infrared image that shows the crowded area
around the object known as GRS 1915+105, or GRS 1915 for short....
http://chandra.harvard.edu/resources/podcasts/hd