Tag

Cosmic Flows

All articles tagged with #cosmic flows

Hidden Giant Behind the Milky Way: Vela Supercluster Rewrites Our Local Gravity
science2 months ago

Hidden Giant Behind the Milky Way: Vela Supercluster Rewrites Our Local Gravity

Astronomers using the CosmicFlows dataset and new redshifts from SALT and MeerKAT have shown the Vela Supercluster, located behind the Milky Way in the Zone of Avoidance, is far larger and more massive than once thought—about 33,800 trillion solar masses across roughly 300 million light-years. Comprising two walls of galaxy clusters moving toward each other, it exerts a gravitational pull rivaling or exceeding the Great Attractor and helps explain local galaxy motions, effectively completing a map of a major gravitational player hidden behind our galaxy.

Hidden Galaxy Giant Behind Our Galaxy: The Vela Supercluster Emerges as a Cosmic Powerhouse
space2 months ago

Hidden Galaxy Giant Behind Our Galaxy: The Vela Supercluster Emerges as a Cosmic Powerhouse

Astronomers mapping the Milky Way’s dust-shrouded Zone of Avoidance have revealed the Vela Supercluster, a vast structure about 300 million light-years across containing roughly 33,800 trillion solar masses, located around 870 million light-years away. Using 65,518 galaxy distance measurements plus 8,283 new redshifts from SALT and MeerKAT, they show Vela is comparable in mass to the Shapley Supercluster and its gravity exceeds that of the Great Attractor, helping explain observed cosmic flows and completing our map of the local universe.