To do this, aliens could use high-tech structures called Dyson spheres (giant, energy-siphoning orbs first proposed in the 1960s) to steal energy from the disc of white-hot matter swirling around a black hole's horizon, then radiate that energy outward into space. Because black holes can radiate up to 100,000 times more energy than a star like our sun, they may make tempting targets for alien civilizations looking to power their interstellar enterprises, the study authors wrote. While alien hunters spend plenty of time searching for habitable planets beyond our solar system, a study published in July in the journal Monthly Notices of the Royal Astronomical Society warns that scientists shouldn't overlook nature's most extreme objects: Black holes. Local pilot Steve Allen estimated that the strobe lights “spanned about a mile long and a half mile wide,” traveling about 3,000 miles per hour. No sound was reported.(Image credit: Marc Ward/Stocktrek Images/Getty) (opens in new tab) The small town of Stephenville, Texas, 100 miles southwest of Dallas, is mostly known for its dairy farms, but in the evening of January 8, 2008, dozens of its residents viewed something unique in the sky. Citizens reported seeing white lights above Highway 67, first in a single horizontal arc and then in vertical parallel lines. READ MOR E: Interactive Map: UFO Sightings Taken Seriously by the U.S.

However, because the UFO was not seen on radar, the FAA called it a “weather phenomenon” and declined to investigate. The witnesses say it hovered for about five minutes before shooting upward, where it broke a hole in the clouds-enough that pilots and mechanics could see the blue sky. The news report became the most-read story on The Chicago Tribune’s website to that date and made international news.

How the Battle of Stalingrad Marked a Turning Point in WWII It moved three times the speed of sound and more than twice the speed of the fighter jets. Commander Jim Slaight of Strike Fighter Squadron 41 attempted to intercept the craft, but it accelerated away, reappearing on radar 60 miles away. Black Aces Commander David Fravor and Lt. Then, in a few moments, a white Tic Tac-shaped object appeared above the water. It had no visible markings to indicate an engine, wings or windows, and infrared monitors didn't reveal any exhaust. When two FA-18F fighter jets from the aircraft carrier USS Nimitz arrived in the area, they first saw what appeared to be churning water, with a shadow of an oval shape underneath the surface. For two weeks, the crew had been tracking objects that appeared at 80,000 feet and then plummeted to hover right above the Pacific Ocean.

On November 14, 2004, the USS Princeton, part of the USS Nimitz carrier strike group, noted an unknown craft on radar 100 miles off the coast of San Diego. Department of Defense via The New York Times/Redux 2. Department of Defense via The New York Times/Redux) An image taken from a video released by the Defense Department’s Advanced Aerospace Threat Identification Program of a 2004 encounter near San Diego between two Navy F/A-18F fighter jets and an unknown object.

Signs alien news footage