Scientists discover 500 light-year-wide hole in the Milky Way torn open by a supernova A view of the spiral galaxy NGC 3949, which likely resembles how the Milky Way looks from afar
Scientists have discovered a gigantic hole blown out of the Milky Way, and believe a powerful supernova 10 million years ago might be to blame.
The gap or “cavity” as astronomers are describing it, was described this week in a paper published this week in The Astrophysical Journal Letters as a spherical void cut out of the Perseus and Taurus molecular clouds and spans nearly 500 light-years across.
“We have two theories—either one supernova went off at the core of this bubble and pushed gas outward forming what we now call the ‘Perseus-Taurus Supershell,'” said lead author Shmuel Bialy, a postdoctoral researcher at the Institute for Theory and Computation at Harvard’s Center for Astrophysics (CfA), “or a series of supernovae occurring over millions of years created it over time.”
“Hundreds of stars are forming or exist already at the surface of this giant bubble,” Bialy added.
[embedded content]
Incredibly, what we’ve long thought of as two independent structures – the Perseus and the Taurus molecular clouds, located in the region of the sky marked by the constellations Perseus and Taurus – might actually have been one and the same as recently as 10 million years ago, but was literally torn in two by the cosmic blast.
The void was discovered after astronomers created a 3D map of that region of space using data gathered from Gaia, a European Space Agency-launched space telescope, in order to study the two molecular clouds for the first time in three-dimensional space. Until now, molecular clouds could only be seen in two dimensions, limiting what we could know about their position, size, and other features.
“We’ve been able to see these clouds for decades, but we never knew their true shape, depth or thickness. We also were unsure how far away the clouds were,” said Catherine Zucker, a postdoctoral researcher at the CfA who led a separate study in The Astrophysical Journal that described the 3D mapping process. “Now we know where they lie with only 1 percent uncertainty, allowing us to discern this void between them.
Analysis: the universe is a vast and violent place
Molecular clouds like the ones that the research teams were studying when they discovered this massive wound in the Milky Way are responsible for the formation of all the stars in the sky.
As our colleagues over at Space.com explain, these unfathomably big clouds are full of hydrogen, helium, and a bunch of other elements that form the stars, planets, moons, and other objects of a solar system, which form inside them as these elements get drawn together by gravity.
Blowing a 500 light-year wide hole in one of them is an impressive feat, which demonstrates the equally unfathomable power of a supernova, that final energetic gasp of a dying star. These blasts also seed their material back into the universe as new molecular clouds to begin again the cycle of creation and destruction in the universe.
Whether it was a single gargantuan blast or many smaller ones over time, it reminds us that as powerful as all of our bombs put together might be, they are nothing compared to the raw power of the natural world.
Scientists have discovered a gigantic hole blown out of the Milky Way, and believe a powerful supernova 10 million years ago might be to blame. The gap or “cavity” as astronomers are describing it, was described this week in a paper published this week in The Astrophysical Journal Letters as…
Recent Posts
- A battle might be brewing as talks swirl of OpenAI working on a search engine to challenge Google’s dominance
- Multibillion-dollar Apple deal looms large in Google antitrust trial
- Everything new on Netflix in May 2024
- The Morning After: Peloton’s grim post-pandemic reality
- Netflix’s Cobra Kai season 6 will be a mega 15 episode epic released in 3 parts from July
Archives
- May 2024
- April 2024
- March 2024
- February 2024
- January 2024
- December 2023
- November 2023
- October 2023
- September 2023
- August 2023
- July 2023
- June 2023
- May 2023
- April 2023
- March 2023
- February 2023
- January 2023
- December 2022
- November 2022
- October 2022
- September 2022
- August 2022
- July 2022
- June 2022
- May 2022
- April 2022
- March 2022
- February 2022
- January 2022
- December 2021
- November 2021
- October 2021
- September 2021
- August 2021
- July 2021
- June 2021
- May 2021
- April 2021
- March 2021
- February 2021
- January 2021
- December 2020
- November 2020
- October 2020
- September 2020
- August 2020
- July 2020
- June 2020
- May 2020
- April 2020
- March 2020
- February 2020
- January 2020
- December 2019
- November 2019
- December 2011