Robert Kirshner Identified 330 Million-Light-Year Boötes Void With Just 60 Known Galaxies
Updated
Updated · spacedaily.com · May 30
Robert Kirshner Identified 330 Million-Light-Year Boötes Void With Just 60 Known Galaxies
4 articles · Updated · spacedaily.com · May 30
About 330 million light-years across, the Boötes Void is one of the largest known underdense regions in the observable universe, centered roughly 700 million light-years from Earth and first identified by Robert Kirshner’s team in 1981.
Only about 60 galaxies have been found inside it, versus roughly 2,000 expected at average cosmic density, making it dramatically underpopulated rather than truly empty.
Its few galaxies appear along a tube-like strand through the middle, supporting the idea that the region may have formed as several smaller voids merged.
Astronomers say the void does not challenge standard cosmology: large near-empty gaps are expected in the cosmic web, where filaments and clusters surround vast low-density regions.
That scarcity also makes the Boötes Void scientifically useful, offering a relatively clean laboratory for studying isolated galaxies and testing models of structure formation and cosmic expansion.
Could a colossal cosmic void explain why our measurements of the universe's expansion don't add up?
What can the few lonely galaxies inside the Great Void teach us about the fate of our own Milky Way?
Is 'The Great Nothing' truly empty, or is it the key to understanding the dark energy tearing our universe apart?