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Recent Podcast
A Tour of Eta Carinae
A Tour of Eta Carinae
New Chandra data are helping astronomers better understand how the two stars in Eta Carinae interact with one another through powerful winds blowing off their surfaces. (2014-08-27)


Stephan's Quintet in 60 Seconds

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Narrator (Megan Watzke, CXC): This beautiful image gives a new look at Stephan's Quintet, a compact group of galaxies discovered about 130 years ago and located about 280 million light years from Earth. A view in optical light from the Canada-France-Hawaii Telescope on Mauna Kea clearly shows four individual galaxies. A fifth, harder-to-see galaxy is plunging its way through the system at almost two million miles per hour. This extreme motion generates a shock wave that heats the gas between the galaxies. This in turn causes the gas to glow strongly in X-rays, and that's detected by the Chandra X-ray Observatory. Stephan's Quintet provides a rare opportunity for astronomers to observe a group of galaxies in a crucial stage of its evolution.

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