Hoag's Object (PGC 54559) is a rare ring galaxy located approximately 600 million light years away in the constellation Serpens Caput, featuring a perfect ring of young blue stars about 120,000 light years wide surrounding an old yellow core, with a completely empty gap between them containing no arms, dust, or connecting material, and a second similar ring galaxy visible through the gap; despite 75 years of study, no single formation theory fully explains this unique structure.
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A Perfect Ring of Stars With Nothing Inside #space #galaxy #astronomy #hubble #shorts #spacefactsAdded:
This is one galaxy.
A perfect ring of young blue stars, 120,000 light years wide, surrounding an old yellow core.
Between them, nothing.
No arms, no dust, no bar.
75 years later, no theory fully fits.
And look closely through the gap.
That second ring you see is another ring galaxy far behind this one.
So, how do you draw a circle in space?
But honestly, it gets stranger.
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