--- title: "Astronomers Discover “Interstellar Tunnel” In Our Solar Neighborhood" description: "Astronomers say they've found an \"interstellar tunnel\" near our solar system that potentially leads to the vicinity of other star systems. As detailed in a new study published in the journal Astronomy & and Astrophysics, the tunnel exists as an opening in a structure of hot gas that surrounds our solar neighborhood known as the […]" date: "2024-11-09" modified: "2024-11-09" authors: - name: "Frank Landymore" job_title: "Contributing Writer" link: "https://futurism.com/authors/flandymore" url: "https://futurism.com/the-byte/astronomers-discover-interstellar-tunnel" categories: - "Energy" - "Off-World" - "Renewable Energy" - "Science & Energy" - "Solar Power" - "Space" tags: - "solar system" - "space" - "the digest" --- # Astronomers Discover “Interstellar Tunnel” In Our Solar Neighborhood ![The interstellar tunnel, a feature of an enormous structure called the Local Bubble, could lead to nearby stars.]() *\Image: Getty / Futurism\* ## Cosmic Channel Astronomers say they've found an "interstellar tunnel" in our solar neighborhood that could lead to other star systems. As detailed in a [new study]() published in the journal *Astronomy & and Astrophysics,* the tunnel exists as part of an enormous structure of hot gas with a radius of hundreds of light years that surrounds our solar system known as the Local Hot Bubble. What's more, the findings suggest that it could connect with a nearby and even larger bubble. Using extensive data collected by the eROSITA telescope, the first x-ray observatory fully outside of the Earth's atmosphere, the researchers generated a 3D model of the entire LHB, confirming some features that astronomers had predicted, but also uncovering entirely new ones. "What we didn't know was the existence of an interstellar tunnel towards Centaurus, which carves a gap in the cooler interstellar medium," said study coauthor Michael Freyberg, an astronomer at Germany's Max Planck Institute for Extraterrestrial Physics, [in a statement](). "This region stands out in stark relief thanks to the much-improved sensitivity of eROSITA and a vastly different surveying strategy compared to ROSAT," the space telescope's predecessor. ## Living in a Bubble The existence of the LHB, or simply the Local Bubble, was first proposed over fifty years ago to explain the pervasive presence of background x-ray radiation. Since the space between star systems is filled with diffuse clouds of gas and dust known as the interstellar medium — the stuff that coalesces to form stars — these low energy x-ray emissions should have been absorbed long before we could detect them. But what if our cosmic neck of the woods was empty for some reason? That would be the Local Bubble. Astronomers believe it formed some [fourteen million years ago](), when a chain of supernovas blew all nearby interstellar material away, creating a cavity around 1,000 light years in diameter. As evidence, we can see remnants of these supernovas today. The idea has faced challenges; decades ago, it emerged that an interaction between our Sun's solar winds and our planet's outer atmosphere could produce similar x-ray emissions, according to the researchers. But the idea has been [further supported]() in recent years with observations of clusters of nascent stars forming on the border of this bubble. ## Tip of the Iceberg The authors suggest that the interstellar tunnel may be part of an entire interstellar medium network [that spans the Milky Way](), formed by blasts of energy released by stars. Along with the interstellar tunnel, the detailed modeling of the Local Bubble revealed a temperature gradient across the structure, with the northern region notably hotter than the southern one. This suggests that there may have been more recent supernovas that expanded the bubble and reheated its material, perhaps in the last few million years. **More on space:** *[There's Something Impossible About This Ravenous Black Hole, Scientists Say]()* ## Author At Futurism, my work has often centered on bringing a sense of clarity and insight to complex topics ranging from the regulation of emerging technologies to the esoteric ideologies of Silicon Valley executives, while striving not to lose the poetic sense of awe inspired by often-obscure fields like astrophysics and quantum computing. I broke the story of CNET using AI to produce articles that turned out to be riddled with factual errors and plagiarism — a dam-breaking inflection point, as I've reported, that's inspired copycats and endless discourse while beguiling stakeholders ranging from tech giants to purveyors of spam around the web. My work at Futurism has been cited by publications including CBS News, the Los Angeles Times, Vice, Gizmodo, Engadget, the Verge, and Vanity Fair. I grew up in locales ranging from India to China, and now live in the exotic suburbs of Virginia. In my free time, I'm an avid reader of weird sci-fi literature, an aficionado of East Asian cinema, and, regrettably, a relapsed gamer. Allegedly, I’m working on a debut novel, currently untitled. ### Author social links [Bluesky]()