Astronomy Picture of the Day -- A Prominence on the Sun

NASA ^ | September 19, 2015 | (see photo credit)

[SunkenCiv]

Explanation: This eerie landscape of incandescent plasma suspended in looping and twisted magnetic fields stretched toward the Sun's eastern horizon on September 16. Captured through a backyard telescope and narrowband filter in light from ionized hydrogen, the scene reveals a gigantic prominence lofted above the solar limb. Some 600,000 kilometers across, the magnetized plasma wall would dwarf worlds of the Solar System. Ruling gas giant Jupiter can only boast a diameter of 143,000 kilometers or so, while planet Earth's diameter is less than 13,000 kilometers. Known as a hedgerow prominence for its appearance, the enormous structure is far from stable though, and such large solar prominences often erupt.

[SunkenCiv]

I wholeheartedly agree. The impact idea has more plausibility I think, because the Uranian moons are basically “normal”; contrast that with Neptune’s moons.

[Delta 21]

Just cropped the big one down a bit for my new desktop.

I'm lovin it !!

[Delta 21]

...and its 10,000 degrees, and gravity is +28g’s there !