
Astronomers discover mysterious ‘intestellar tunnels' in space. Here's more to it
A bubble born from explosions
Decades of research has proved that the Solar System lies within a region of space known as the Local Hot Bubble (LBH) which spans across 300 light years, formed as a result of cosmic explosions called supernovas that occurred millions of years ago. These explosions caused the surrounding gas to heat up, resulting in a low-density, high-temperature environment, and traces of these activities are still present in the form of faint remnants of hot plasma.
Dr. L. L. Sala and colleagues used data from the eRosita X-ray telescope to chart this region in unprecedented detail and Dr. Sala mentioned, 'We find the temperature of the LHB exhibits a north-south dichotomy at high latitudes,' in a paper published in the journal Astronomy & Astrophysics. eRosita's research, combined with old data from ROSAT, another X-ray survey, indicate temperature differences across the region and faint traces of warm gas, dust cavities, and interstellar structures, offering the most refined picture yet of our cosmic neighborhood.
Also read | Pune astronomers make vital space discovery: Galactic wind around tiny galaxy
Intriguing cosmic channels
The most intriguing finding from the study is what the team describes as 'interstellar tunnels' - channels of hot plasma that seem to extend from the Solar System, stretching towards the Centaurus constellation. Another such pathway appears to point towards Canis Major.
These pathways, that could be part of a larger network of cosmic 'backroads,' connecting regions of the galaxy shaped by ancient supernovas, seem to cut through the hot plasma, forging channels between us and other distant star systems. The findings indicate that these may be part of a larger interconnected system stretching between star-forming regions and pockets of gas, lending weight to older theories about networks of dust cavities filled with hot gas resulting from supernova activities.
Also Read | Harvard astronomer warns interstellar object moving towards Earth could 'save us or destroy us'
Redefining the 'void'
Space is far from empty and the Local Hot Bubble is proof that ancient supernovas and other cosmic activities have shaped today's cosmos into a complex environment intermingling with dust, plasma, radiation and magnetic fields, making the so-called 'void' far more complex than simple vacuum. The research team has successfully mapped out parts of the LBH and its peculiar passages but much remains unclear. Some areas appear to be connected by cavities, while others are blocked, indicating that more advanced research models are required to understand them.
Astronomers claim that advanced X-ray missions, deeper surveys, and more refined models of hot gas distribution are required in order to understand more. Mapping them further could reveal how they shape cosmic rays, dust flow, and stellar winds.
The new discovery reiterates the fact that even our local space holds surprises, challenging old assumptions and adding complexity to what lies between the Solar System and other nearby stars. As technology improves, each new finding will not only answer questions but also uncover more, gradually reshaping our understanding of the cosmos.
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Time of India
3 hours ago
- Time of India
What lies between the stars? Astronomers map a mysterious ‘interstellar tunnel' of plasma stretching from our solar system to distant stars
Astronomers have discovered evidence of a strange 'interstellar tunnel', a channel of hot, low-density plasma stretching out from our solar system toward distant stars. The finding, made using the eRosita X-ray telescope , sheds new light on the hidden structures of our galactic neighborhood and challenges long-held assumptions about the emptiness of space. For decades, the general conception among scientists has been that the Sun sits inside a peculiar region called the Local Hot Bubble , a vast cavity about 300 light-years across, created by ancient supernova explosions . These blasts heated the surrounding gas and carved out a bubble of hot, thin plasma. Until now, it was thought of largely as an isolated feature. by Taboola by Taboola Sponsored Links Sponsored Links Promoted Links Promoted Links You May Like Undo This analysis, led by Dr. L. L. Sala and colleagues from the Max Planck Institute and published in Astronomy & Astrophysics, shows the bubble may be more connected than previously believed. Data reveal a tunnel-like structure extending toward the Centaurus constellation, and possibly another pathway leading toward Canis Major. Mapping space with X-rays Live Events The breakthrough came from the eRosita X-ray telescope, part of the Spectrum-Roentgen-Gamma mission. It captured faint X-ray emissions from hot gas, then astronomers combined eRosita's results with older ROSAT data to map temperature differences and structures around the solar system. Their painstaking survey divided the sky into thousands of sections, extracting signals from warm gas and dust cavities. This revealed the faint glow of the Local Hot Bubble, and, unexpectedly, the presence of tunnel-like channels branching outward. Old theories, new evidence The idea of cosmic 'backroads', channels connecting regions of hot, thin gas, was suggested decades ago. However, evidence was lacking. The new findings confirm at least part of those earlier theories, showing that supernova explosions may have left behind a patchwork of linked cavities that shape how energy and matter flow through the Milky Way. What these tunnels could mean The tunnels are not literal passageways, but low-density corridors in space where hot plasma has carved paths between star-forming regions. These features help explain how stellar winds, dust, and cosmic rays travel across the galaxy. The study also found that the thermal pressure inside the Local Hot Bubble is lower than expected, which means the bubble might be open-ended in some directions, allowing these interstellar 'channels' to extend further. Are spaces really void? It is easy to picture space as empty, but that idea is misleading. The regions between stars are far from a perfect vacuum; they are filled with gas, dust, plasma, radiation, and magnetic fields. The Local Hot Bubble, the vast cavity surrounding our solar system, is a striking example of how violent events like supernovas can sculpt this interstellar material into surprising forms. When stars explode, they blast out matter and energy that heat and churn the medium around them. Over millions of years, these forces create stark differences in density, temperature, and composition. What looks like a void is, in reality, a complex and dynamic environment. The new study from the Max Planck Institute suggests that the bubble's internal pressure is lower than once thought, hinting that it may be open in certain directions. That could explain the tunnel-like channels of hot plasma extending toward distant constellations. Still, much remains uncertain. Some regions appear to form continuous chains of cavities, while others are closed off. Understanding these tangled structures will require sharper data and more advanced models. What is clear is that appearances deceive: space may look calm, but it carries the scars of ancient stellar upheavals. Our solar system wandered into the Local Hot Bubble a few million years ago, long after nearby stars had exploded. Now we find ourselves near its center, not by design, but by coincidence. It is as if we stumbled into the aftermath of a great cosmic event, arriving late to a party whose fireworks ended millions of years before humanity even existed. What comes next Researchers say more sensitive X-ray missions and 3D mapping will be needed to understand these structures fully. Future work may reveal how widespread such tunnels are, how they influence galactic dynamics, and whether they connect into a larger network of super bubbles across the Milky Way.


India Today
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Hindustan Times
18 hours ago
- Hindustan Times
Astronomers discover mysterious ‘intestellar tunnels' in space. Here's more to it
Space is full of surprises, and it continues to baffle even experts! While most of us imagine our Solar System as planets surrounded by an empty void, astronomers are claiming that there's much more happening in the cosmic neighborhood. New studies conducted by astronomers at the Max Planck Institute, led by Dr. L. L. Sala and his colleagues have confirmed that the Sun sits inside a giant bubble of hot gas, and within it, there might be strange 'interstellar tunnels' connecting us to other star systems. New discovery indicates a network of "interstellar tunnels" connecting our Solar System with other stars.(Unsplash) A bubble born from explosions Decades of research has proved that the Solar System lies within a region of space known as the Local Hot Bubble (LBH) which spans across 300 light years, formed as a result of cosmic explosions called supernovas that occurred millions of years ago. These explosions caused the surrounding gas to heat up, resulting in a low-density, high-temperature environment, and traces of these activities are still present in the form of faint remnants of hot plasma. Dr. L. L. Sala and colleagues used data from the eRosita X-ray telescope to chart this region in unprecedented detail and Dr. Sala mentioned, 'We find the temperature of the LHB exhibits a north-south dichotomy at high latitudes,' in a paper published in the journal Astronomy & Astrophysics. eRosita's research, combined with old data from ROSAT, another X-ray survey, indicate temperature differences across the region and faint traces of warm gas, dust cavities, and interstellar structures, offering the most refined picture yet of our cosmic neighborhood. Also read | Pune astronomers make vital space discovery: Galactic wind around tiny galaxy Intriguing cosmic channels The most intriguing finding from the study is what the team describes as 'interstellar tunnels' - channels of hot plasma that seem to extend from the Solar System, stretching towards the Centaurus constellation. Another such pathway appears to point towards Canis Major. These pathways, that could be part of a larger network of cosmic 'backroads,' connecting regions of the galaxy shaped by ancient supernovas, seem to cut through the hot plasma, forging channels between us and other distant star systems. The findings indicate that these may be part of a larger interconnected system stretching between star-forming regions and pockets of gas, lending weight to older theories about networks of dust cavities filled with hot gas resulting from supernova activities. Also Read | Harvard astronomer warns interstellar object moving towards Earth could 'save us or destroy us' Redefining the 'void' Space is far from empty and the Local Hot Bubble is proof that ancient supernovas and other cosmic activities have shaped today's cosmos into a complex environment intermingling with dust, plasma, radiation and magnetic fields, making the so-called 'void' far more complex than simple vacuum. The research team has successfully mapped out parts of the LBH and its peculiar passages but much remains unclear. Some areas appear to be connected by cavities, while others are blocked, indicating that more advanced research models are required to understand them. Astronomers claim that advanced X-ray missions, deeper surveys, and more refined models of hot gas distribution are required in order to understand more. Mapping them further could reveal how they shape cosmic rays, dust flow, and stellar winds. The new discovery reiterates the fact that even our local space holds surprises, challenging old assumptions and adding complexity to what lies between the Solar System and other nearby stars. As technology improves, each new finding will not only answer questions but also uncover more, gradually reshaping our understanding of the cosmos.