I won't see another comet like that in my lifetime." The interplanetary iceberg will be visible throughout July in the northern hemisphere, moving in a westerly direction across the sky.

but as it continues to move it is going to get higher in the night sky but farther away from the sun, so less bright," the expert said. The comet made its closest pass by the Sun in late September.

A newly discovered comet blazes across night skies over Arizona, California, Hawaii and Washington in a series of images posted online. Photos and videos posted from Hawaii Volcanoes National Park ...