Researchers at the Yunnan Observatory of the Chinese Academy of Sciences have come to a conclusion as to why some Type Ia supernovae explode earlier than expected. Observations have shown that about half of all Type Ia supernovae occur less than 100 million years after their galaxies’ formations – much earlier than deemed possible by previous causal models. Dr. Bo Wang and his team believe these early supernovae are the result of a white dwarf star siphoning matter from a nearby helium star.
Images of Type Ia supernova 2005ke
exploding in optical (left), ultraviolet (center),
and x-ray (right) wavelengths
(Credit: NASA/Swift/S. Immler