Newest supernovaPosted: June 16, 2008
A supernova occurs when a star reaches the end of its life and explodes. They are fairly rare but important as they release heavier elements into the interstellar medium.
This nova was buried deep within a dense cloud of gases and other debris, so optical telescopes were no good: it was found by radio telescopes that detected the burst of x-rays and radio waves.
More here, in NASA’s press release.