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Massive star Eta Carinae

Eta Carinae is one of the most massive stars in our Galaxy. It underwent a massive outburst in the 1840s, during which is became the brightest star in the night sky. Now, however, it is shrouded by the dust ejected during that outburst. Eta Carinae is believed to one of a twin (or binary) star system, with the two stars revolving around each other in 5.5 years. The interaction between the two stars leads to a 5.5-year cycle in the appearance of the system.

3cm ATCA image by S. White and R. Duncan

Additional information and images on Eta Carinae at radio wavelengths.

Original: Bob Sault (9-Aug-2003)
Modified: Bob Sault (9-Aug-2003)