A giant, jellyfish-like UFO was filmed hovering in the direction of a US military base in Alaska before disappearing within minutes.

Sara Jane Osborn told the Daily Mail she was photographing a rainbow in Anchorage when a dark object emerged above distant trees near what she believed was Joint Base Elmendorf-Richardson (JBER).

JBER hosts F-22 Raptor fighters and supports air defense, surveillance and military airlift operations. 

The encounter unfolded on June 15 at around 10.13pm, she recalled, while the evening sky remained bright. 

The object appeared to have dangling appendages that moved independently as it hovered and turned from side to side. Osborn estimated it was visible for about three minutes before vanishing almost as abruptly as it appeared. 

'It disappeared almost as quickly as it came,' Osborn said. 

Its apparent size also puzzled them, with a small aircraft spotted during their outing looking tiny by comparison.

Osborn said the search afterward failed to uncover a kite, its operator or another explanation for what they had witnessed.

She added that 'only God and the government'  would know what it was, describing an eerie sight that left her and her husband, Pete, looking for answers.

Don't know about the government knowing what it is.

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