This Galaxy Has No Spin

Everything in the universe spins. Not as a poetic observation but as a physical fact, one so well-supported and so universal it barely registers as a rule anymore. Every large galaxy ever studied confirms it. The physics is not subtle. The evidence is not ambiguous.

Webb found an exception. Galaxy XMM-VID1-2075 is not spinning. Not slowly, not barely, not at all. Its stars are moving in every direction at once, a churning randomness where orderly rotation should be. It is enormous, and it formed less than two billion years after the Big Bang.

It had also already stopped forming new stars, a process that typically takes far longer. Somehow this galaxy was born, grew enormous, aged completely, and lost its spin before most of the universe had finished its first chapter.

The leading explanation is a single catastrophic collision: two galaxies rotating in nearly opposite directions, striking each other head-on with enough precision that their rotation cancelled out entirely. A companion object has been spotted nearby, still being absorbed, possibly the surviving half of whatever hit it.

The models permit this outcome. They consider it extraordinarily rare, which in practice meant no one worried much about it. Webb is now looking for more. If several turn up, the models will need revision, and so will a fair portion of what we thought we understood about how the early universe assembled itself.

The universe appears to have been considerably less orderly in its youth than it led us to believe. This is, historically, a familiar pattern.

Read the full story at Universe Today, May 31, 2026

Hot Take: Conservation of angular momentum is the closest thing physics has to a rule no one gets to opt out of. This galaxy opted out.