A weird and extremely violent new type of supernova in which a massive star was "stripped to the bone," offers a rare glimpse of the interior of a massive star prior to its death.
Neil Armstrong almost made a mistake. He had found an interesting rock sticking out of a formation. Curious to see what the rock was made of, he needed to examine its interior more closely. So he reached for his hammer and took a swing. The rock was far more brittle than he anticipated, and instead of cleaving in two it shattered. One of those shards flew away with so much force that it left behind a bloody gash in this forearm.

