PHOENIX - 12 News received multiple reports of a light streaking across the Valley skies Tuesday night.
It wasn't just Arizona; people across the Western U.S. described seeing the light.
The object looks similar to the SpaceX Falcon 9 rocket seen in the sky over Arizona in December, when people across Arizona and Southern California shared photos and videos of a rocket and vapor trail on social media.
Earlier on Tuesday, SpaceX launched the world's most powerful rocket, SpaceX's Falcon Heavy.
The unmanned rocket surged aloft with more than 5 million pounds of thrust, more than double the next biggest U.S. rocket flying today.
SpaceX has not yet confirmed the light seen in the sky is a the Falcon Heavy.
And NORAD public affairs said whatever it was, it was not a threat to the U.S., which is the only thing they monitor.