This is...

...the object from the dark in my blip post last night.

There wasn't any sun yesterday so it wasn't glowing as bright as it might have done during the night. After a sunny day, it glows brightly all night.

I did love your suggestions what it might be and had to smile at...
"The Loch Ness Monster"
"Maybe a fairy teapot"
"You've snuggled inside a flower " :)
"Moonlight on an ice puddle or pond"