• Galaxy Clusters Have Been Surrounded by High-Energy Particles for Almost Their Entire History

    Updated: 2025-06-30 23:01:00
    Universe Today Home Videos Podcast Newsletter Join the Club RSS Feed Galaxy Clusters Have Been Surrounded by High-Energy Particles for Almost Their Entire History By Carolyn Collins Petersen June 30, 2025 at 8:00 AM UTC Cosmology This stunning image reveals a distant galaxy cluster teeming with energy : galaxies shine in visible light white ghostly red clouds unveil a newly discovered radio mini-halo—the most distant ever detected—and blue wisps trace the hot gas glowing in X-rays . Credit : X-ray : NASA CXC SAO Optical : NASA ESA STScI Radio : ASTRON LOFAR Image Processing : NASA CXC SAO N . Wolk If you could see the Universe through a radio-wave eye you'd detect mini-halos of relativistic particles creating radio emissions around some galaxy clusters . Astronomers long figured those

  • Astronomers Explore Different Physics on Simulated Clones of the Milky Way

    Updated: 2025-06-28 02:20:48
    How do you search for a substance that doesn't give off any kind of light, but its gravitational influence shapes galaxies? That's the challenge researchers face as they try to find and explain the mysterious substance called dark matter. They're wrestling with an invisible "something" that appears to make up much of all matter in the Universe.

Current Feed Items | Previous Months Items

May 2025 | Apr 2025 | Mar 2025 | Feb 2025 | Jan 2025 | Dec 2024