Astronomers have discovered a distant galaxy, XMM-VID1-2075, that shows virtually no rotation — a rare find in the early universe. Observed as it existed just 2 billion years after the Big Bang, this massive system challenges the standard understanding that galaxies naturally develop spin through angular momentum. Unlike typical galaxies, which rotate due to the cumulative motion of their stars and gas, XMM-VID1-2075 appears nearly still. Data from the James Webb Space Telescope revealed this anomaly, prompting a new explanation rooted in galactic mergers.

The discovery was published in Nature Astronomy by a team of American scientists. While non-rotating galaxies have been seen before, they were all nearby and extremely old. Finding one so early in cosmic history was unexpected, since rotational motion should already be present. The galaxy’s extreme mass offered a clue: it likely formed through a rare event.

Scientists identified two other similarly massive, slow-rotating galaxies from the same era. The pattern suggests a single cause — the merger of two galaxies spinning in opposite directions at nearly equal speeds. This counter-rotation would cancel out angular momentum, leaving the resulting system with little to no spin. Such events are thought to be extremely rare, making XMM-VID1-2075 a key case for understanding galaxy evolution.