A Pair of Supermassive Black Holes

The strange activity of a galaxy billions of light-years away hints that it may be home to one of the most awaited occurrences in modern astronomy.

Fluctuations in light from the galaxy's nucleus, SDSS J1430+2303, appear disturbingly like a pair of supermassive black holes with a total mass of roughly 200 million Suns on the verge of colliding.

In cosmic words, "imminent" might often last a lifetime. Fortunately, researchers believe that if the signal is caused by massive black holes, they will combine within the next three years.

It could be our greatest chance yet to witness the collision of two supermassive black holes... But we're not sure if that's what's going on at the heart of J1429+2303.

The discovery of colliding black holes in 2015 marked the beginning of a brave new era in astronomy.

Almost all of these mergers have so far included binary pairs of black holes with masses comparable to individual stars

This is for a very excellent reason. The gravitational wave detection instruments, LIGO and Virgo, are intended for this mass range.

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