Somewhere across billions of light-years, a star wandered too close to a supermassive black hole and was unmade — stretched into luminous threads, consumed, and transformed into a flare brighter than 400 billion suns. Astronomers in early 2026 identified this event, nicknamed 'the Whippet,' as one of the most energetic cosmic explosions ever witnessed, belonging to a rare and poorly understood class of phenomena called Luminous Fast Blue Optical Transients. In studying such moments of cosmic destruction, science finds not only spectacle but a deeper map of how black holes grow, where they hide
'The Whippet': Black hole shreds star in cosmic explosion 400 billion times the sun
A star becomes stellar spaghetti, spiraling like pasta around a fork
Mark
When you say a star gets turned into "stellar spaghetti," what's actually happening physically?
Mimi
The black hole's gravity isn't uniform across the star. The side facing the black hole experiences vastly stronger pull than the far side. So the star gets stretched—elongated like taffy. Eventually it tears apart into long, thin streams of material that spiral inward.
Mark
And all that energy—400 billion suns—where does it come from?
Mimi
It's gravitational potential energy being converted. As the material falls toward the black hole, it accelerates to incredible speeds. Friction heats it to millions of degrees. That heat radiates outward as light and X-rays. The faster the material falls, the more energy gets released.
Mark
Why is the Whippet so much brighter than a normal supernova?
Mimi
A supernova is a star collapsing under its own weight. The Whippet is a star being actively torn apart and fed into a black hole. The black hole's gravity is doing the work, not the star's internal physics. That's a fundamentally more violent process.
Mark
That helium stream moving at 13 million miles per hour—how do you even measure something moving that fast?
Mimi
You look at the light it emits and measure the shift in wavelength. If something's moving toward you, the light gets compressed—blue-shifted. If it's moving away, it stretches—red-shifted. The amount of shift tells you the velocity.
Mark
What does finding the Whippet actually change about what we know?
Mimi
It confirms that tidal disruption events are real and detectable. It gives us a new way to find black holes we might otherwise miss. And it shows us that the universe can do things far more violent than we'd previously documented. That changes the models.
Mark
Is there a chance something like this could happen near Earth?
Mimi
Not remotely. The nearest black hole is thousands of light-years away. And stars would have to wander into its vicinity—which is extraordinarily unlikely in the vast emptiness of space. This is a cosmic rarity we're fortunate to observe at all.
The Pulse
- A star torn apart with such violence that its energy output dwarfed every known stellar explosion, releasing the equivalent of 400 billion suns burning at once.
- The event defied easy classification — too bright for a supernova, too fast and blue for conventional explanations — forcing researchers to confront the limits of existing models.
- Teams across multiple continents and space observatories raced to confirm what they were seeing, triangulating distance, temperature, and X-ray signatures to rule out every alternative.
- A shockwave blasted outward at 20 percent the speed of light for roughly half a year, while helium jets streamed toward Earth at speeds suggesting something dense had survived the destruction.
- The Whippet now stands as rare confirmation that Luminous Fast Blue Optical Transients can be born from black holes shredding stars — a finding that reshapes how astronomers hunt for hidden black holes across the cosmos.
Somewhere across billions of light-years, a star wandered too close to a supermassive black hole and was unmade — stretched into luminous threads, consumed, and transformed into a flare brighter than 400 billion suns. Astronomers in early 2026 identified this event, nicknamed 'the Whippet,' as one of the most energetic cosmic explosions ever witnessed, belonging to a rare and poorly understood class of phenomena called Luminous Fast Blue Optical Transients. In studying such moments of cosmic destruction, science finds not only spectacle but a deeper map of how black holes grow, where they hide, and what the universe permits at the edges of its most extreme physics.
In January 2026, astronomers announced the discovery of one of the most violent events ever recorded in the universe. A star had strayed too close to a supermassive black hole and been torn apart with extraordinary ferocity — the resulting explosion, nicknamed 'the Whippet' and formally catalogued as AT2024wpp, released energy equivalent to 400 billion suns burning at once.
The mechanism behind such events is as vivid as it is brutal. When a star approaches a black hole, the difference in gravitational pull across its body stretches it into what astronomers call 'stellar spaghetti' — elongated strands of matter that spiral inward, forming a swirling accretion disk. Black holes, as one researcher observed, are messy eaters: jets of material blast outward at tremendous speeds, producing the brilliant flare detectable across billions of light-years.
The Whippet was first spotted by the Zwicky Transient Facility at Palomar Observatory in California. It immediately resembled AT2018cow, a stellar explosion far brighter than a typical supernova, and matched the signature of a Luminous Fast Blue Optical Transient — an extraordinarily bright burst blazing from visible light through ultraviolet and into X-rays. Though dozens of LFBOTs have been detected, their origins remained uncertain. The Whippet offered rare confirmation that black hole tidal disruption can produce them.
Researchers at Liverpool John Moores University coordinated follow-up observations using the Liverpool Telescope and NASA's Swift spacecraft, confirming the event's intense blue color and X-ray output. Colleagues at UCLA and Caltech measured its distance and ruled out a supernova explanation. A shockwave had propagated outward at roughly 20 percent the speed of light for about half a year before dissipating — approximately 90,000 times faster than a fighter jet.
Mysteries persisted. Helium was detected streaming away at around 13 million miles per hour, hinting that some dense structure had survived the disruption — perhaps a stream of material ejected from the star's core, or debris launched by a third body caught in the chaos. The research was presented at the American Astronomical Society conference in Phoenix and accepted for publication in the Monthly Notices of the Royal Astronomical Society, promising to deepen understanding of the cosmic forces that quietly shape the universe.
In January 2026, astronomers announced the discovery of one of the most violent cosmic events ever recorded. They had spotted a star being torn apart by a black hole with such ferocity that the explosion released as much energy as 400 billion suns burning simultaneously. The event, nicknamed "the Whippet" and formally catalogued as AT2024wpp, represents a tidal disruption event—a phenomenon so rare and extreme that it fundamentally reshapes how scientists understand black holes and the physics of the universe's most destructive forces.
When a star strays too close to a black hole, the immense gravitational pull does not simply swallow it whole. Instead, the difference in gravitational force between the star's near side and far side creates a stretching effect so violent that the star is literally pulled apart. Astronomers describe this process with a vivid metaphor: the star becomes "stellar spaghetti," elongated strands of matter that spiral around the black hole like pasta wound around a fork. Some of this shredded material forms an accretion disk—a swirling vortex of gas and dust that gradually feeds into the black hole. But black holes are, as one researcher noted, messy eaters. Jets of material blast outward from the system at tremendous speeds, creating the brilliant flare that astronomers detect across billions of light-years.
The Whippet was first spotted by the Zwicky Transient Facility at Palomar Observatory in California. What made it immediately striking was its resemblance to AT2018cow, a stellar explosion roughly 10 to 100 times brighter than a typical supernova. The Whippet also matched the signature of a Luminous Fast Blue Optical Transient, or LFBOT—an extraordinarily bright burst of light that blazes across the electromagnetic spectrum from visible blue light through ultraviolet and into X-rays. Though dozens of LFBOTs have been detected, they remain poorly understood. Scientists have long suspected they result from stellar destruction, but the Whippet provided rare confirmation.
Researchers at Liverpool John Moores University, led by Daniel Perley, coordinated observations using the Liverpool Telescope in the Canary Islands and NASA's Swift spacecraft. They confirmed the event was intensely blue and producing X-rays—exactly the signature expected from a black hole shredding a star. Colleagues at UCLA and Caltech measured the distance to the Whippet and ruled out the possibility that this was simply an unusually bright supernova. The extreme temperature and other characteristics pointed unmistakably to a black hole in the act of consuming a massive companion star. "This was many times more energetic than any similar event and more than any known explosion powered by the collapse of a star," Perley said in a statement.
The violence of the event became clearer as observations accumulated. A shock wave propagated outward from the center at roughly 20 percent the speed of light—approximately 134 million miles per hour. This shockwave slammed into the surrounding gas for about half a year before dissipating as it reached the outer envelope of material from the destroyed star. The speed was staggering: roughly 90,000 times faster than a fighter jet at full throttle.
Yet mysteries remained. The team detected helium streaming away from the source at around 13 million miles per hour, moving toward Earth at roughly 750 times the speed of the space shuttle. This suggested that some dense structure had survived the tidal disruption intact—possibly a stream of material launched from the core of the doomed star as it was spaghettified by the black hole, or perhaps material ejected by a third body in the system as it was bombarded by particles and radiation from the feeding black hole.
The significance of the Whippet extends beyond the spectacle of its discovery. Tidal disruption events offer astronomers a new tool for identifying black holes and mapping their locations throughout the universe. They reveal how black holes form and grow, and they provide a window into the most extreme physics imaginable—the behavior of matter and energy in gravitational fields so intense that normal rules break down. The research was presented at the American Astronomical Society conference in Phoenix and accepted for publication in the Monthly Notices of the Royal Astronomical Society. As observations continue, the Whippet promises to deepen our understanding of these cosmic titans and the violent processes that shape the universe.
Notable Quotes
This was many times more energetic than any similar event and more than any known explosion powered by the collapse of a star.— Daniel Perley, Liverpool John Moores University
These events help us identify black holes and provide a new way to identify where black holes occur and how they form and grow.— Daniel Perley, Liverpool John Moores University
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