NOVA Online (click here for NOVA home)
Runaway Universe
Birth of a Supernova
Type 1a
Page 1 of 6 | Next page

Type 1a (1)

Type Ia supernovae originate in binary star systems—systems where two stars orbit each other. In one possible scenario, there are two stars approximately the same size—let's say about the size of our sun. At a certain point in their lifetimes, each star will expand into a red giant, then turn into a white dwarf.

Next page


History of the Universe | Birth of a Supernova | Tour the Universe
Moving Targets | How Big is the Universe? | Spin a Spiral Galaxy
Resources | Transcript | Site Map | Runaway Universe Home

Editor's Picks | Previous Sites | Join Us/E-mail | TV/Web Schedule
About NOVA | Teachers | Site Map | Shop | Jobs | Search | To print
PBS Online | NOVA Online | WGBH

© | Updated December 2000
/wgbh/nova/universe/textindex.html /wgbh/nova/universe/