(CNN)It's as if the universe itself is trying to get in on Halloween.
NASA says a large space rock set to fly narrowly by Earth Saturday morning -- the early hours of Halloween -- looks like a skull. Scientists say that the rock is -- wait for it -- a "dead" comet. In NASA terminology, that means it has "shed its volatiles" that would produce the visible tail seen on some comets.
As it misses Earth by about 300,000 miles (slightly farther away than the moon), the skull-shaped asteroid, named 2015 TB145, will be visible to those with good telescopes
Skull Asteroid to narrowly miss Earth on Halloween - CNN.com