Supernova secrets seen in X-rays
Cassiopeia A is a star more than eight times the mass of our sun, before it
exploded in the cataclysmic.The NuSTAR space telescope array is the first ever to map the radioactive material from a supernova explosion. The NuSTAR's observations of Cassiopeia A showed scientists the location and distribution of radioactive titanium. Each atom of titanium-44 decays to calcium, as well as two particles of light at particular frequencies that NuSTAR can detect. NuSTAR, stands for Nuclear Spectroscopic Telescope Array. It was launched in June 2012 and consists of two telescopes that focus high energy X-ray light.
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