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Scientists Discover Way to Send Information into Black Holes Without Using Energy

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Scientists Discovered Fermi Bubbles At The Heart Of The Milky Way

Deep inside our galaxy, something incredibly powerful happened millions of years ago. The center of the Milky Way experienced a huge burst of energy that sent massive shock waves racing through space. Today, the evidence of that ancient explosion can still be seen in the form of two enormous structures called the Fermi bubbles.

Now, scientists have found new evidence that these giant bubbles are producing some of the most energetic particles in the universe. Using data from the IceCube Neutrino Observatory, researchers have detected signs of high-energy neutrinos coming from these mysterious structures. The discovery provides strong proof that the Fermi bubbles are acting like giant cosmic particle accelerators.

The Giant Bubbles Above Our Galaxy

The Milky Way is a huge spiral galaxy containing hundreds of billions of stars. At its center lies a supermassive black hole called Sagittarius A*, which has a mass millions of times greater than the Sun.

Although the black hole is currently quiet, scientists believe that the region around it was extremely active in the past. A massive release of energy from the galactic center created two giant bubble-shaped structures extending above and below the Milky Way’s disk.

These are known as the Fermi bubbles because they were discovered using observations from the Fermi Gamma-ray Space Telescope.

The bubbles are enormous. They rise about 10 kiloparsecs, or roughly 30,000 light-years, above and below the center of the galaxy. If they could be seen with human eyes, they would cover a huge part of the night sky.

Scientists estimate that the ancient explosion that created them released around 10⁵⁶ ergs of energy — an amount comparable to millions of exploding stars.

A Cosmic Explosion Frozen in Time

The Fermi bubbles are like a fossil record of a violent event from the past. Their edges contain powerful shock waves moving through space.

These shocks behave similarly to the shock waves created by supernova explosions. They can accelerate tiny particles called cosmic rays to extremely high speeds.

Cosmic rays are mostly made of high-energy protons and other atomic particles. When these particles travel through space and collide with gas, they can create secondary particles, including neutrinos.

For years, scientists predicted that the Fermi bubbles should produce neutrinos. However, detecting them was extremely difficult because neutrinos are incredibly hard to observe.

Why Neutrinos Are So Important

Neutrinos are often called “ghost particles” because they rarely interact with matter. Trillions of neutrinos pass through your body every second without causing any effect.

Because they travel almost completely unaffected through space, neutrinos can carry information from places that normal light cannot reveal.

Unlike gamma rays or X-rays, neutrinos can escape from dense regions and travel directly to Earth. This makes them valuable tools for studying some of the most powerful events in the universe.

The challenge is that scientists need very large detectors and many years of observations to find their signals.

IceCube Detects the Hidden Signal

The IceCube Neutrino Observatory, located deep under the Antarctic ice, is designed to detect high-energy neutrinos from space.

Researchers analyzed 12 years of IceCube data and compared the detected neutrino events with the locations of the Fermi bubbles.

They found that the neutrinos were not randomly distributed. Instead, they appeared to match the shape and location of the bubbles.

The signal was especially strong in the northern part of the bubbles and in regions where X-ray observations show stronger shock activity.

The results showed a statistically significant detection, meaning the chance of this pattern happening randomly is extremely small.

This provides strong evidence that the Fermi bubbles are producing high-energy neutrinos.

The Milky Way as a Natural Particle Accelerator

The discovery reveals that our galaxy itself can act as a giant particle accelerator.

The shock waves around the Fermi bubbles accelerate cosmic-ray particles to energies millions of times greater than those produced by human-made particle accelerators.

Scientists estimate that the cosmic-ray particles inside each bubble carry around 10⁵⁴.⁵ ergs of energy.

This suggests that about 10% of the energy from the original galactic explosion was converted into powerful cosmic rays.

The finding confirms that the shocks around the bubbles are strong enough to accelerate particles to extremely high energies, even reaching the range of peta-electronvolts.

Bigger Bubbles Hidden Around the Fermi Bubbles

The story becomes even more interesting because the Fermi bubbles may not be the oldest or largest structures created by the Milky Way’s past activity.

Recent X-ray observations from the eROSITA telescope revealed even larger bubble-like structures surrounding them. These are called the eROSITA bubbles.

They extend much farther, reaching almost 80 degrees above and below the galactic plane.

Scientists think these larger bubbles may have formed from an older explosion from the center of the Milky Way. The Fermi bubbles may represent a younger phase of the same type of powerful activity.

Both structures appear to have been created by enormous releases of energy from the galactic center.

What Caused the Explosion?

Scientists believe the explosion may have been connected to activity around the Milky Way’s central black hole.

When large amounts of gas fall toward a supermassive black hole, they can produce powerful jets and energetic outflows. These outflows can release huge amounts of energy into surrounding space.

Another possibility is that many stars near the galactic center exploded together, creating a combined effect.

Whatever the exact cause, the event was powerful enough to reshape a large region around the center of our galaxy.

A New Way to Study Our Galaxy

The discovery of neutrinos from the Fermi bubbles opens a new chapter in understanding the Milky Way.

Until now, scientists mainly studied these structures using light — gamma rays, X-rays, and radio waves. Neutrinos provide a completely different view because they directly reveal the activity of high-energy particles.

This discovery helps scientists understand how galaxies release energy, how cosmic rays are created, and how black holes can influence their surroundings.

The Fermi bubbles are not just giant structures floating above our galaxy. They are evidence of a dramatic event that happened millions of years ago and is still affecting the Milky Way today.

The universe keeps its history written in unexpected ways. Sometimes, the clues are not found in light, but in tiny invisible particles traveling across space — neutrinos carrying the ancient message of a forgotten cosmic explosion.

Reference: Uri Keshet, Ilya Gurwich, "Fermi bubbles detected in ∼100 TeV neutrinos", Arxiv, 2026. https://arxiv.org/abs/2606.22387

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