🌌 TON 618 is the largest black hole ever discovered, with an estimated mass of 40 billion times that of our Sun.

To give you an idea of its size, its event horizon—the boundary where nothing can escape—is about 390 billion kilometers wide. That’s over 40 times the distance from Neptune to the Sun! In fact, TON 618’s diameter is roughly 30 to 40 times larger than our entire Solar System.

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