![Image](http://upload.wikimedia.org/wikipedia/en/thumb/7/7f/Casper_poster.jpg/200px-Casper_poster.jpg)
Holmes has traveled a long way from us but it left a huge question mark in its wake. What caused it to have that outburst? Maybe there is or was containerized material under pressure and the container simply eroded to the breaking point as it moved close to Earth.
My very first imagining, was… uh oh, a signal flare to attack! The time is right to wipe out the humans! They’re dangerously close to invading our outer inner space space.
But since we’re still here… I’m going with astrophysical phenomenon… and leave it at that.
Thank you Tony Cook for such a beautiful picture. This APOD captures the mystery of outer space with the ghostly appearances of the comet and its separated tail... way cool. 8)