How do we know a SpaceX rocket will crash into the moon? The rocket's projected impact into the moon's near side – the side permanently facing Earth – was predicted by Bill Gr

An abandoned rocket segment will crash into the moon early Wednesday morning, adding to existing space debris and likely creating a crater on the lunar surface. The discarded rocket booster from SpaceX,

SpaceX's Falcon 9 rocket upper stage will strike the moon's northwestern limb, leaving a 60-to-100-foot crater.

The impact wasn't visible to the naked eye, but photos are expected to come from a lunar satellite at a later time. Carl Schmidt, a planetary scientist at Boston University involved in the observation campaign,