I was sleeping one night about 16/17 years ago and heard something that I could only describe as a UFO. I didn't get a chance to look out my window, but I heard this rapidly pulsating droning sound VERY close to the roof, as if it was tracking me. I heard it fly overhead where my bed was, and it paused for a few seconds, but the sound could still be heard.
Probably lasted for about 10 seconds before it rapidly flew off. I've never heard anything in my life that sounds anything like this; it gives me the chills just remembering what I heard that night!
Exploding head syndrome (EHS) is an abnormal sensory perception during sleep in which a person experiences auditory hallucinations that are loud and of short duration when falling asleep or waking up.[2][4] The noise may be frightening, typically occurs only occasionally, and is not a serious health concern.[2] People may also experience a flash of light.[5] Pain is typically absent.[2]
I have had this one time when I was very little. Around 6 or 7 years old or so, but I remember it very clearly. For me, it was like a gunshot went off right next to my head only a couple minutes after I fell asleep. I remember jolting awake and asking my brother and mother what it was, but they had no idea what I was talking about. Maybe some people have different experiences, but mine couldn't be mistaken for a UFO sound.
I had this but to me I saw a bright flash of light and heard a universe tearing type of noise. I immediately jolted awake and went to my window because I thought something exploded outside. Every animal in my house was undisturbed and sleeping and my entire family heard nothing.