Tag

Supercluster

All articles tagged with #supercluster

space1 month ago•6 min saved

Hidden Vela-Banzi Supercluster Expands Our Cosmic Map

Astronomers mapped the Vela-Banzi supercluster behind the Milky Way, stretching about 300 million light-years across with at least 20 galaxy clusters and a mass around 30 quadrillion suns, located roughly 800 million light-years away in the Zone of Avoidance; two massive cores are converging, indicating ongoing growth. The map draws on some 65,000 distance measurements and about 8,000 redshifts (including ~2,000 from MeerKAT), refining our view of nearby cosmic structure and cosmological models.

via The Daily Galaxy|

#meerkat #radio-astronomy #space

astronomy2 years ago•2 min saved

Unveiling the Mystery: The Rarity of Spiral Galaxies in the Universe

Astronomers have discovered why spiral galaxies like the Milky Way are rare in our cosmic neighborhood. Supercomputer simulations revealed that frequent galactic collisions in the Supergalactic Plane, a billion light-year-wide sheet where large galaxy clusters are located, transformed spiral galaxies into elliptical galaxies. These collisions shattered the delicate spiral arms and pushed more matter into the supermassive black holes at their centers, making them even bigger. Spiral galaxies located away from the plane, however, were mostly spared from these collisions, allowing them to preserve their structures.

via Livescience.com|

#astronomy #galactic-collisions #milky-way

astronomy2 years ago•2 min saved

Accidental Discovery: Massive Billion Light-Year Galaxy Bubble Unveiled

Scientists mapping a web of galaxies have accidentally discovered a vast bubble named Hoʻoleilana, located 820 million light-years from Earth. This structure, larger than the previously discovered Laniākea supercluster, contains previously known superclusters such as the Coma Cluster and the Sloan Great Wall. The diameter of Hoʻoleilana, measuring one billion light-years, exceeds theoretical expectations and is thought to be the result of ripples in the early universe known as Baryon Acoustic Oscillations.

via Forbes|

#astronomy #baryon-acoustic-oscillations #galaxy-bubble