White sphere moving quickly pulsating and flashing west to East across the sky.

A round shaped object flying west to East across the sky. The object at first seemed like a satellite, no sound and moving quickly. Upon further watching the object pulsates bright to almost dark and then bright again. During its path across the sky on 3 occasions when it pulsated bright it had an incredibly bright white flash that illuminated an aura about 100x it’s small size and then continued to pulsate until moving out of view.