Astronomers Detect Radio Signal from Mysterious Star Explosion

By Space.Fan Editorial DeskSeptember 28, 2026 at 2:04 PM UTC

Scientists found a faint radio glow coming from a star that exploded in a way that continues to baffle researchers.

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The Drop

In August 2025, space sensors caught a strange signal that looked like two s crashing together. Astronomers quickly used ground-based telescopes to look for a flash of light. They found an explosion called SN 2025ulz. At first, they thought it was the rare result of a merger, but it turned out to be a very young, stripped-down exploding in a typical way. To learn more, experts used massive radio telescopes like the Very Large Array and the MeerKAT telescope. These tools are designed to pick up faint radio waves from deep space. Even though the signal was weak, the team successfully detected radio waves coming from the area of the explosion. Scientists now have two big ideas about why this signal exists. One possibility is that the exploding ’s debris is slamming into gas and dust left over from its life. The other idea is that a narrow, high-speed jet of energy shot out from the center of the blast. The team is still working to figure out which one is correct.

Why It Matters

This discovery matters because it helps us understand the messy life and death of s. By spotting radio signals from this specific type of explosion, researchers can learn if a central engine, like a small or a spinning , is powering the blast. This helps scientists test theories about how s die and what kind of remnants they leave behind.

The Catch

The biggest problem is that the data is not clear enough to pick one answer over the other. The signal could be caused by shockwaves hitting space dust or it could be an off-axis jet, and the current observations cannot tell the difference between the two.

Put That in Perspective

This is a big step for multi-messenger astronomy, which combines signals like gravity waves with light. Future studies will likely focus on looking for these radio signals more quickly after a gravitational wave alert, helping to map out more of these hidden cosmic events.

Source September 28, 2026

ApJL