It’s almost impossible for us to conceive of any object seven light years across, yet that’s the jaw-dropping size of the Bubble Nebula captured in stunning detail by the Hubble telescope.
As NASA explained:
“The seething star forming this nebula is 45 times more massive than our sun,” NASA writes. “Gas on the star gets so hot that it escapes away into space as a ‘stellar wind’ moving at over 4 million miles per hour.”
“This outflow sweeps up the cold, interstellar gas in front of it, forming the outer edge of the bubble much like a snowplow piles up snow in front of it as it moves forward.”
The shot is a compilation of images taken with different filters over three and a half hours.
Watch the video here:
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