A massive white airplane appeared silently floating over the San Francisco skyline, leaving residents surprised and curious. Content creator Cesar Concepcion Salza posted a video of the plane on Instagram, showing its slow-motion glide across the San Francisco skyline. In the clip, the massive plane can be seen gracefully hovering over the horizon from behind a tall building. The viral video has sparked worldwide speculation about the plane's origin and purpose, with theories ranging from drones, movie props, to government projects.

"What is this in the San Francisco sky today?" Salza wrote while posting a video of the plane on Instagram. The clip quickly garnered thousands of views and was reposted on Instagram and Reddit.

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