A mix of government, private, adversarial, and unexplained objects are filling up an increasingly congested US airspace. Uncovering what fills it should be of greater public interest.

At last the Pentagon has acknowledged funding a secret multi-million-dollar programme to investigate sightings of Unidentified Flying Objects (UFO).

This is what it's like aboard Beijing's "UFO", the world's largest glass sightseeing platform that opened in the capital's suburban Shilinxia scenic spot on April 30.

A plane enthusiast captures a UFO overtaking a flight during take-off from New York JFK airport, reports Daily Mail Online.