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Contact Binaries and Merging Stars

A contact binary is two stars that are so close that their surfaces are touching. In profile, such a system would resemble a peanut. As the two stars orbit each other, they lose momentum, so they eventually spiral together. Such a merger could produce a bright outburst, known as a nova, with the two stars forming a single, more-massive star. It could also produce a supernova explosion, which would completely destroy the two stars.

 

Radio Programs

VW Cephei Two stars in a tight embrace May 19, 2018

Future Cannibal A future act of stellar cannibalism May 6, 2018

Bright Quartet A fascinating stellar quartet April 11, 2018

Future Fireworks Getting ready for some fireworks June 29, 2017

Red Nova An exploding star turns red June 28, 2017