Complex sentence: In particular, radioactive 44 Ti was measured to be very abundant within supernova stardust grains at the time they condensed during the supernova expansion, confirming a 1975 prediction for identifying supernova stardust (SUNOCONs), which became part of the pantheon of presolar grains.
Split into simpler sentences: In particular, radioactive 44 Ti was measured to be very abundant within supernova stardust grains at the time they condensed during the supernova expansion. This confirmed a 1975 prediction of the identification of supernova stardust (SUNOCONs), which became part of the pantheon of presolar grains.