Exclusive testimonies from Brazilian police reveal UFO chase in 2008 that defied physics and shocked military observers.

Chinese scientist ignites global UFO debate with paper hinting at antigravity propulsion and inertial mass cancellation.

A crack of lightning, a burst of heat, and suddenly a glowing sphere hangs in the sky like a craft from another world.

Three Minneapolis police officers spotted a spherical Unidentified Aerial Phenomena (UAP) with six glowing rings that changed colors. The anonymous witnesses filed a report with Americans for Safe ...